As its name suggests, Kaua'i's Fern Grotto is a natural lava rock grotto covered in hanging ferns and tropical foliage. This special place was once the birthplace of the island's ali'i ...

Kauai, the fourth largest Hawaiian Island ... kayak or join a boat tour up the Wailua River to see the Fern Grotto, which is a popular wedding spot on the island. Back in the car and about ...