Mallorca is famous for pearls and so here's this Pearl Museum that has a number of interesting displays dedicated to the pearl industry. Among the exhibits are pictures of famous people wearing pearls, a bunch of pearl jewelry and even what looks like a pearl jeweler's workstation complete with machinery, tools and pearls. A looped video showing how pearls are grown and harvested is interesting.
The museum is completely free and low key. Unless you cross over to the other side where the (very expensive) pearls are for sale, you'll be clear from any hassle.
I thought it was interesting and worth the ten minutes of walking around to check it all out. read more