Image by Luis Javier Sandoval Getty Images

Built to divert divers away from deteriorating coral reefs, this unique aquatic museum features hundreds of life-size sculptures in the waters of Cancún and Isla Mujeres. Only snorkeling is allowed at the 4m-deep artificial reef at Cancún's Punta Nizuc gallery, while the deeper Isla Mujeres' gallery is ideal for first-time divers. Organize outings through dive shops; Scuba Cancún is recommended.

The underwater museum is a creation of British-born sculptor Jason deCaires Taylor.