Kauai is by far the greenest and most beautiful of the Hawaiian islands, packed with great places to visit and things to do. navigable rivers, dense rainforest in the island
Waimea Canyon
Alka’i Swamp Trail
Allerton Botanical Garden
Spouting Horn
Na Pali Coast
Uluwehi Falls
Fern Grotto
One of the strangest places to visit on Kauai is the Fern Grotto. It is a beautiful lava rock cave covered with ferns. The grotto is also located on the Wailua River.