Experience the magic of Vai Nauri, one of the most breathtaking swimming caves in the Cook Islands. This deep, crystal-clear pool is surrounded by striking limestone formations and a canopy of stalactites, creating an otherworldly atmosphere. Take the steps down for a gentle entry or embrace the adventure by jumping from a 3-metre (10-foot) outcrop into the refreshing blue waters. For a truly eerie and peaceful experience, visit on a weekday when the cave is at its quietest.