Best natural monuments around Hilo are characterized by lush landscapes and diverse natural wonders. This region on the Big Island of Hawaii features a unique blend of volcanic formations, tropical rainforests, and powerful waterfalls. Visitors can explore a variety of natural attractions that showcase the island's geological and ecological richness. The area offers numerous opportunities to experience Hawaii's dramatic natural environment.
Last updated: April 27, 2026
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impressive waterfall in front of a huge cave
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Observation platform with a view of the bubbling water
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beautifully landscaped Japanese-style park with tea house and giant trees
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The water on the upstream side runs through an old lava tube. I'm told (but haven't seen myself) that when the water isn't too rough, you can carefully hike upstream through the tube to see two waterfalls. There's good parking for several cars just past the bridge in the direction away from Hilo (towards Pepeekeo).
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The Kawainui Stream Bridge has become a little attraction around this rainforest because some people like to jump from the bridge into the water. Warning: Jumping off the bridge can be dangerous, as the river level can change and it can become too shallow. Jumping is not recommended.
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Rainbow (Waiānuenue) Falls is a large waterfall, measuring 80 ft (24 m) tall and almost 100 ft (30 m) in diameter. It is free to enter and see the falls because this area is part of the Hawai'i State Parks. There is no fee to see the falls. Rainbow Falls gets its name from the rainbows that show around the falls, created by the mist from the falls and the sunshine at 10:00 a.m.
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The boiling posts are sink holes with bubbling waters. For safety, it's best to stay far away from the edge of the river near Boiling Pots. Visitors are warned about the dangers of slipping and falling. The bubbling is caused by the water in the lava tubes, which are not boiling hot but give the illusion of boiling. This is a very unique thing to see, and it is highly recommended for visitors to walk down and check them out.
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Kawainui Stream is flowing down from the Hilo Watershead, leaving pools of water along the mountain. At this point there is a wood bridge suspended over the water. The most unique thing is the mouth of the stream next to the bridge as it looks like water is rushing out of a black hole bored in the jungle.
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Hilo offers several natural monuments suitable for families. Rainbow Falls is easily accessible with a short walk to the viewing platform. Liliuokalani Gardens provides a relaxed, beautifully landscaped space with plenty of quiet corners. The observation platform at Boiling Pots also offers a safe way to view the unique bubbling waters.
While specific wheelchair accessibility details for all sites are not provided, Rainbow Falls is known for its easy accessibility, with a viewing platform just a short walk from the parking area. Akaka Falls State Park, though outside Hilo proper, features a paved 0.4-mile loop trail, which generally indicates good accessibility.
The best time to witness the rainbow phenomenon at Rainbow Falls is typically on sunny mornings, between 9 and 10 AM, when the sun hits the mist at the right angle.
Wailuku River State Park is home to both Rainbow Falls and Boiling Pots. You'll see impressive waterfalls, turbulent river sections with unique rock formations, and lush, green surroundings characteristic of the Big Island's east coast. The Wailuku River itself is the longest in Hawaii, flowing between Mauna Kea and Mauna Loa.
Yes, there are various hiking opportunities around Hilo. For easy options, consider routes like the Liliʻuokalani Gardens Loop or the Hilo Bayfront Trail. More extensive hiking trails, including moderate and difficult options, can be found in the broader hiking guide for Hilo.
The 'bubbling' at Boiling Pots is an optical illusion. It's caused by the Wailuku River's water flowing through lava tubes, creating turbulent currents and whirlpools that make the water appear to boil, though it is not hot. An observation platform provides a safe view of this unique geological phenomenon.
Liliuokalani Gardens is a beautifully landscaped Japanese-style park. You'll find a traditional tea house, giant banyan trees, and many quiet corners perfect for relaxation. It offers a serene atmosphere with picturesque views.
While some people jump from Kawainui Stream Bridge, it is important to note that jumping off the bridge can be dangerous. The river level can change, making the water too shallow at times. It is not recommended due to safety concerns.
Beyond the waterfalls and gardens, Hilo is close to other significant natural attractions. Hawaiʻi Volcanoes National Park, about 30 miles southwest, offers a unique opportunity to explore active volcanoes, lava tubes, and volcanic landscapes. Kaumana Caves provide a chance to walk through ancient lava tubes, offering a glimpse into the island's volcanic past. Richardson Ocean Park is a black sand beach known for clear waters and sea turtles, ideal for snorkeling and swimming.
Hilo offers several popular running trails. You can enjoy an easy run on the Coconut Island via Banyan Drive loop or explore the Wailuku River State Park via Haili Street route. For more options, check out the running trails around Hilo guide.
Hilo's natural monuments are unique due to the region's blend of volcanic landscapes, lush rainforests, and powerful waterfalls. This area showcases Hawaii's dramatic natural environment, from the rainbows at Rainbow Falls to the turbulent waters of Boiling Pots, all shaped by the island's volcanic activity and abundant rainfall.


Extend your search for the best caves by checking out these guides of the top ones around Hilo: