You'll want to browse the collections at Cancun Underwater Museum, Arrecife El Meco Underwater Museum and Capitán Dulché Museum. Sights like Isla Mujeres Cemetery, El Meco Archaeological Site and Mundaca House are must-sees while exploring the area. Consider spending a leisurely afternoon outside at West Coast of Isla Mujeres, Punta Cancun, and Punta Nizuc National Park, Garrafon Natural Reef Park or Isla Mujeres Sculpture Garden.