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A rainbow over a river and lush green landscape

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Wider Wailua River State Park

Combine your visit to Wailua Falls with other highlights in the same park system. A short drive to Kuamo'o Road connects you to more waterfalls, caves, and historic sites.

Photo: tour listing on Viator

Wailua River State Park extends beyond the famous double-tiered falls. A few miles away, you can view a 151-foot waterfall and explore ancient Hawaiian temples.

You can drive to most lookouts yourself. To see the sacred Fern Grotto, you must book a guided riverboat tour.

A woman paddleboarding on a calm river with mountains in the background
Photo: tour listing on Viator
01

'Opaeka'a Falls

15 minutesRoadside lookout

This is a 151-foot cascading waterfall visible from a large roadside lookout. Access is easy, and you do not need to hike to see the drop. Your daily parking and entry receipt from Wailua Falls covers your admission here as well.

Aerial view of four people paddleboarding down a narrow river
Photo: tour listing on Viator
02

Fern Grotto

1.5 - 2 hoursGuided tours only

This natural lava-rock cave is draped in tropical ferns. It is historically a sacred place for Hawaiian royalty. You can only reach the grotto via guided riverboat tours departing from the Wailua Marina, so book your tickets in advance.

Aerial view of a river winding through a lush green valley
Photo: tour listing on Viator
03

Wailua Complex of Heiau

30 minutesHistoric landmark

This National Historic Landmark features the remains of ancient Hawaiian temples and royal birthstones. It remains a culturally significant and sacred site for Native Hawaiians. Visitors must treat the area with deep respect when exploring.

Tour the River and Grotto

Scenic view of a river winding through lush green mountains
Kauai: Waimea Town, Wailua River Cruise & Fern Grotto Tour10 h 4.6 (593)from $279
full day island tourfrom $279 on Viator
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