Certainly one of the most unique art museums I’ve seen, this sculpture garden is entirely underwater, so to enjoy it you must visit by glass bottom boat, diving, or snorkeling. MUSA Isla Mujeres Bay is located in protected waters at the south end of the island, so you can swim there if your hotel is located nearby. Or book yourself a tour, which won’t cost you too much, and you can visit by glass bottom boat. Of course, for those who can dive, there are diving expeditions as well.