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    Keahua Arboretum

    3.6 (17 reviews)

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    Rainbow Eucalyptus Trees
    Izzy G.

    We were visiting 'Opaeka'a Falls when someone told us there was Rainbow Eucalyptus Trees and a Stream if you keep following the road. We took his advice and Im so glad we did! Such an exciting find. Peaceful & Quiet, Trees are beautiful, and by the parking lot there's Picnic Tables available if you want to relax and swim in the water. You definitely need 4WD if you're feeling adventurous. Dirt road, Pot holes, Water crossings, and Ankle deep mud! Definitely take in account the weather, don't come here if it's raining heavily. We came on a nice sunny day, but I can't imagine hiking or driving on the trails in bad conditions. If you're more into basic touristy activities, then you should avoid coming here! Please leave your area cleaner than you found it. Side note: There's an outhouse with two toilets but they are gross! No toilet paper. Bring Hand Sanitizer & Wipes in case you need to use it.

    Rainbow eucalyptus trees
    Placido D.

    This is a beautiful spot for a photo or a picnic. Decent parking and several shaded picnic tables widely spaced along creekside. The bark on the mini-forest of rainbow eucalyptus trees is beautiful. If you've never seen these trees before, this is highly recommended.

    Tiffani K.

    It's a hiking trail with rainbow eucalyptus trees at the trailhead. GPS will probably get confused. From Hwy 56 in Wailua take HWY 580 about 6 miles, passing Opaeka'a Falls and Kamokila Hawaiian Village along the way(bonus). After taking Hwy 580 the 6ish miles there will be a small parking lot on right and trailhead on left directly across street from parking. The rainbow eucalyptus trees are the first trees on the trail and worth the trip up in my opinion. The hike is an added bonus if the weather is nice.

    Erica R.

    This place was a pain to find. I entered the address into my iPhone Maps app and my friend and I were directed to some random place that wasn't even close to the arboretum. I switched to my Google Maps app, but it didn't really indicate that you just follow the Kuamo'o Rd. Hwy 580 until it ends. After some frustration, we ended up figuring it out... but we had asked some locals during our attempts to find this place and they had NO idea what place we were asking about. Anyway, for anyone trying to GPS this place? Get on the Kuamo'o Rd. Hwy 580 and follow it until the end. Once you get to the end of the official highway (through some very wooded/secluded/windy looking parts of the road), you'll see the parking spots available, the water covered walkway, and the like. Once there, the arboretum was mostly fun to walk through. Initially, my friend and I came here because we wanted to follow the trail to the poles that remain from the Jurassic Park entrance signs. We ended up picking a different trail though(I believe you can find the entrance poles by following the Powerline Trail here in the arboretum) and just walking. Forewarning, the trail can get VERY muddy... even though it hadn't rained that day. It's also covered in plenty of potholes, and I can't imagine driving the rental vehicle through the pathways... though some people clearly do (over the 4+ hours we were walking, 2 or 3 cars with groups of visitors to Kauai passed asking for directions to certain parts of the park, etc). We were walking along the path towards the waterfall in the arboretum and started hearing gunshots in the background. There's a sign that notes the start of a hunting zone in a certain area of the arboretum, but it's still disconcerting to hear the shots in the background... even when you're not heading in that direction. My friend was getting pretty anxious, so we ended up turning around without getting to the waterfall or the Jurassic Park entrance poles. It *IS* a nice hike... and I had no issues with the mud or having to wade through water of whatever. I had brought appropriate hiking shoes (which I wasn't even planning to clean or take back to the mainland), and that's a must for hiking around the area. There aren't many people in this place either (though you will find some folks driving the path who offer to help get you where you're going, etc.). So it's fairly quiet... minus, uh, the gunshots. TL;DR Difficult to find, but enjoyable sights. Not one of those "can't miss" locations on Kauai though, and I'm kinda regretting that we bothered (since we ultimately didn't get to see much of anything).

    So beautiful!! If you are a tree lover like me, then this is a must see!!
    Tioni S.

    Not hard to find!! Take Kuamoo Road all the way to the very end, where you will find a river flowing over the road/bridge-like path (see my pics and you will know what I am talking about). If you have 4 wheel drive, you can drive across the river and continue to follow the road, there you will find the Jurassic Park gate. While driving to the Keahua Arboretum, the road will feel endless, but don't worry, as long as you don't take any turns, you will not get lost!! Just follow that winding road all the way up. You can visit Opaekaa Falls and the Wailua River lookout on your way up to see these beautiful eucalyptus rainbow trees. Have fun!!

    The flooded road. There are hangout spots on either side of the creek.
    Jen W.

    I wasn't sure what to expect based on the description. This spot turned out to be just a quiet, tree-lined meadow-y spot in the forest with some picnic tables gazebos, and outhouse. There are plenty of parking spots and room to park along the side of the road as well. As a tourist travelling with just one other person, I was underwhelmed. There's no view at the arboretum and, as far as I could tell, no trails to hike to get out to better views. Crossing the flooded road is a novelty, but that's about it. We didn't want to cross the river with our rental car, but I have to admit, I'm curious to see where the road would have ended up (IIRC, it changed to a dirt road not far after the flood). If I were a local, this would be an *awesome* spot to spend an afternoon. You can totally set up a BBQ and play frisbee and splash around in the creek (the same one that floods the road) and just chill out. There are naturally about three divided spots, each one huge, so crowding should not be a problem, ever. I wish we had more spots like this in SF, hence 4 stars. :)

    Jeff C.

    This is not an aboretum. This is the real jungle hike that leads to some Jurassic Park filming locations, but the catch is you need a machete and williness to hike through more than ankle deep mud on overgrown unrecognizable paths. It's a popular river playground for the locals.

    Jackie M.

    A bit of a drive from town, but very beautiful. I had never seen rainbow eucalyptus trees in person and I was not disappointed. More trees than I expected. Pretty muddy, but there was enough paring and a stream to rinse off in.

    Jenny F.

    These rainbow eucalyptus trees are stunning. This place is so beautiful! We are here in November and the bark was so vibrant. This is truly a must see place before you die!

    Creek getting in

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    Review Highlights - Keahua Arboretum

    The initial stop in the parking lot is very beautiful with the rainbow Eucalyptus trees and the walk along the water.

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    Wailua Falls

    Wailua Falls

    4.4
    (330 reviews)
    3.6 mi

    I visited the Wailua Falls in Līhuʻe, Kauaʻi, Hawaii [Maalo Rd; Hwy 583] on Saturday, 01/24/26,…read morearound 3:30 PM. Wailua Falls offered an incredibly close view, which made the experience feel special. I was able to truly appreciate the waterfall's beauty up close. One fun highlight was spotting a rooster sitting right near the edge, which was such a classic Kauaʻi island moment because roosters are everywhere on the island. I also noticed a touching memorial sign dedicated to Kavika Luna, "Mr. Aloha" - The Flying Hawaiian (May 1960 - September 2024). The message spoke about rainbows appearing as he chanted and the magic of Wailua Falls coming alive. It felt meaningful because I actually caught a mini rainbow during my visit, which made the moment even more breathtaking and memorable. Overall, I was very pleased with this stop. Wailua Falls is absolutely worth checking out for its natural beauty and history.

    Located at the end of Maalo Road, this beautiful double waterfall cannot be safely or legally…read moreaccessed due to the notoriously steep, muddy, and very slick unmaintained trail down. But you can however view it safely from the designated roadside lookout. The parking lot here, although free, is very small and often filled to the brim with cars. The lot itself is also in desperate need of maintenance as it is filled with potholes, so getting in and out may be tricky. There are also vendors who fill up the front part of this lot, which further add to the chaos. Located in a sacred royal valley once known as the capital of Kauai, ancient Hawaiian chieftains and warriors use to test their bravery by leaping from the top of this nearly 200ft tall waterfall. There's not a lot to do once you get up to the top of the lookout except to snap a few photos. So it is debatable if it is worth the drive all the way out to here and dealing with the whole parking lot situation.

    Photos
    Wailua Falls
    Wailua Falls
    Wailua Falls
    Rooster on the edge!

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    Rooster on the edge!
    Lydgate Beach Park

    Lydgate Beach Park

    4.4
    (243 reviews)
    5.7 mi

    Initially coming here to kill a little time before a reserved tour, my wife and I really admired…read morethe planning and execution of the building/landscaping of this family park. Named after a pillar in the community who came to Kauai in the late 19th century, Lydgate Beach Park is 62 acres, with the Lydgate Park pathway encompassing 2.5 miles, a small part of the much larger Ke Ala Hele Makālae costal trail. There is plenty of parking, with both dedicated surface lots and street parking on the paved road. We immediately noticed surfers on electric surfboards out pretty far, even on this windy day. At the northern part of the park is where most people gather, close to modern facilities and a manned lifeguard station and a large covered event area with plenty of parking. Closer to the shore, we saw a seal just lying on the land, bathing in the sun, completely ignoring the people milling by. The very large safe man-made swimming/tide pools are great for the kekei and others, with constant refreshing of sea water over the lava rocks. There are picnic tables nearby as well with a lot of green space. My favorite feature are the man-made protected swimming pools, What I loved about it was how spread out everything was, with so many amenities. It just never felt crowded, even if a lot more people came. As we were leaving, my wife mentioned that Lydgate Beach is one of those rare parks where an ocean-loving family would intentionally live close by, just to be near this park.

    This snorkeling spot has tons of parking. We found that the fish were mostly towards the back by…read morethe rocks, if that's what you're there for. We found a spot, setup towels on the sand and headed to the water. The bottom was mostly sand so very "feet friendly."

    Photos
    Lydgate Beach Park
    Lydgate Beach Park
    Protected pool to left

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    Protected pool to left
    Waimea Canyon State Park

    Waimea Canyon State Park

    4.8
    (449 reviews)
    15.8 mi

    If I could only visit 1 spot during my time in Kauai, I would without any hesitation choose Waimea…read moreCanyon State Park. Affectionately nicknamed the "Grand Canyon of the Pacific", it is easy to see how this canyon gained its affectionate moniker. Stretching 14 miles long, 1 mile wide and more than 3,600 feet deep, the Waimea Canyon provides breathtaking panoramic views of crested buttes, rugged crags and deep valley gorges. Even at the first rest stop you come across, you are already high enough that the view would have made the trip worthwhile. There are 5 rest stops on your way up to the top, each offering restrooms, trash cans, and their own respective viewing points; each stunning in its own rights. You can choose to simply stop at each stop on your way up like we did, or drive all the way to the top and work your way back down. Keep in mind it takes almost an hour to drive up to the very top without stopping. And the fog starts rolling in later on in the day obscuring visibility into the canyon. So you'll want to make sure you start your day off early if you're opting for the later strategy. For us, we started on the bottom and worked our way back up. We never made it all the way to the top as the fog had already rolled in by the time we hit the higher levels which made viewing anything on those levels impossible. There is now some construction being done for safety improvements and roadwork patching. Much of which is past due and much needed. As we started to encounter quite a few gigantic potholes on the higher elevations that often required either maneuvering around into oncoming traffic or traversing very slowly over the shallower parts of the potholes. We were quite thankful we were in a SUV because we were fairly certain we would not have made it past some of the potholes if we were in a lower profile vehicle such as a sedan or convertible. While driving the canyon is free (outside of parking), you can also splurge and view the canyon unobstructed from an ariel vantage through either a chartered plane or helicopter ride.

    Fantastic views - sometimes can be cloudy at the top $10 a vehicle and $5 a person but stunning…read moreviews ! Spectacular ! The road going up is quite windy - give your self some time to get there it takes a bit but breathtaking

    Photos
    Waimea Canyon State Park
    Waimea Canyon State Park is on the west side of Kauaʻi | Rees's Roots
    Waimea Canyon State Park is on the west side of Kauaʻi | Rees's Roots
    End of Waterfall

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    End of Waterfall
    Na Pali Coast State Park

    Na Pali Coast State Park

    4.6
    (22 reviews)
    5.3 mi

    I'd like to be transparent, I'm a little bit confused about a few things…read more.. I had reservations made ahead of time to hike the famed Kalalau Trail 2 miles to Hanakapi'ai Beach and another 2 miles to Hanakapi'ai Falls. Upon driving to the Kalalau Trailhead, I entered Ha'ena State Park. I thought to myself, "oh, wow, cool, I didn't even know Kalalau Trail was within a state park!". Now, lol, after parking my car and reviewing the Kalalau Trail hiking guidelines, it was time to venture over to Hanakapi'ai Beach. Not even 1 minute into the trail, there was a clear sign stating I was now entering Na'Pali Coast State Wilderness Park. What??? But I thought Kalalau Trail was part of Ha'ena SP?! So both? What's the difference between Ha'ena SP and Na'Pali Coast SP? I guess the only thing to do is venture over to Google and search for the answer... The only reasonable solution I discovered on Google is Ha'ena SP hosts the parking lot for Kalalau Trailhead. But, once you start hiking on Kalalau Trail land, you're officially now entering and located within Na'Pali Coast boundaries. And with this info...I believe there are more options for activities within Ha'ena State Park, although I never got around to do any exploring. Now, if you're specifically visiting here for the Kalalau Trail, I'm convinced it's Na'Pali Coast territory, lol. Finally, trying to get to the bottom of this strange mystery, is when visiting Kokee State Park on the opposite side of the island of Kauai, most of the overlooks and lookout points there showcased the Na'Pali Coast. But I guess for Kokee SP, you're not actually inside Na'Pali Coast State Park land, you're just admiring the views and sceneries of the Na'Pali Coast from high above. Lol, yes...maybe I should have been better prepared ahead of time. With all this said...let me quickly return to the Kalalau Trail and provide a few highlights about the experience and what you can expect inside Na'Pali Coast State Wilderness Park... - While hiking to Hanakapi'ai Beach, a lot of the beautiful Na'Pali Coast setting will be revealed. There were moments to take a break from the trek to appreciate the landscape. - When the clouds went away and the sun shined, the coastline illuminated the Pacific Ocean waters. - You'll also capture a vantage point of Kauai's lush green island vegetation and rain forest appearance. In total, that's what I believe made Na'Pali Coast State Wilderness Park rewarding. It's hiking among nature until Kauai's colorful coast comes into appearance. The surroundings exude that vintage, tropical, Hawaiian image that tourists anticipate when visiting. At the time of visiting Kauai, I found it difficult to understand whether I was hiking Kalalau Trail within Ha'ena SP or Na'Pali SP. After completing some detailed internet research, I'm confident the popular hike is connected with Na'Pali. And with that understanding, Na'Pali Coast is a winning state park.

    Amazing! After driving a bit off road, we parked on an ocean side cliff. Walked down to see the…read moretortoises and the cave. Ended up on a pristine beach.

    Photos
    Hiking among a rainforest setting.
    Hiking among a rainforest setting.
    The entrance sign
    The entrance sign
    Na Pali Coast State Park

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    Keahua Arboretum - parks - Updated July 2026

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