I was bummed to discover that the tours of this in-ground fortress are only done 3x a year, the rest of the year, the only portion that is accessible is the upper gun escapement. However, the drive up is via a winding and scenic road and the pano views from the top are gorgeous! You can do a hike to another gun escapement and parade grounds, but honestly, there is not much to see and the parade grounds are just a dried grassy plot of land along a dirt road. It really was not worth it, imho, as the only way back to the carpark is via the dirt road with very little to no shade or uphill via an overgrown, narrow pathway.
I think if you can go on one of the few days it is open, then it would be worth the visit, but other than the pano view from there top, there isn't much to see or learn about the history of the fortress aside from a few scattered informational signs. I did some research on it after visiting online and it would be neat to experience the history below ground! read more