If you're feeling adventurous, kayak or join a boat tour up the Wailua River to see the Fern ... When it's flowing, it's a quick roadside stop on the route through Waimea Canyon State Park.

Located on the island’s eastern portion it’s a popular route ... the Wailua River Valley gives the perfect introduction to the incredibly lush Hawaiian landscape. Book a combo kayaking ...

U.S. News Insider Tip: If you're lucky enough to visit Wailua Falls when locals are selling homemade banana bread out of the back of their trucks, be sure to have cash on hand to buy a loaf – it ...