Cayman Crystal Caves shared by @travelleisure says: ""The Cayman Crystal Caves, located on the Northside of Grand Cayman Island, are a major attraction formed millions of years ago and officially opened in 2016. The caves, which were once underwater, feature stunning crystal-like stalagmites and stalactites. Visitors can explore three caves and the surrounding tropical forest through 1.5-hour guided tours. The site has earned significant acclaim, including being named one of the top attractions in the world by Tripadvisor."" on Postcard