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 ...

or discover the secret Uluwehi Falls on one of the park's lesser-known hiking trails. No visit to Wailua River State Park would be complete without stopping at one of the area's best cultural ...

at Kayak Kauai at the Wailua River Marina. Then, head out for a peaceful 2.5-mile float down the river and a half-mile hike to see Secret Falls, aka Uluwehi Falls, with its 100-ft cascade.