Kauai (Population 58,303, Area 552 sq. miles) The "Garden Island" offers breath-taking views, abundant tropical vegetation, numerous waterfalls, the Grand Canyon of the Pacific Waimea Canyon, and the valley of Kalalau. Kauai is a collage of tropical plants and flowers of every color imaginable. Popular destinations in Kauai include Hanalei Bay, the Wailua River, Princeville, Nawiliwili Bay, and Poipu Beach.