Nudging the International Dateline, the Kingdom of Tonga is the first country in the world to welcome the new day. Here, the waters are so crystal clear that you can see the ocean floor to a depth of 130 feet. In Vava'u, swim to Swallows Cave, or discover the calm waterways by sea kayak. Or explore the quiet beauty of Tonga's capital, Nuku'Alofa, with its vibrant Polynesian culture and Victorian-style Royal Palace.