The most popular attraction on the Wailua River is Fern Grotto, a natural lave rock formation that has hanging ferns and lush ...

Located on the east side of the island, this lush, tropical garden features more than 2,500 species of rare and endangered plants. Visitors can hike the trails to see waterfalls, cross bridges and ...

First things first: Before touring the island's wee 68 square miles, head to a beach and acclimate to the tropical vibes ...