Among the best things to do in Hawaii is the hike to Manoa Falls, which is also one of the most iconic activities on Oahu. It's a short drive from downtown Honolulu and can be reached via public bus.

When it's time to ditch the Hawaii beach scene to explore inland, waterfall hikes offer verdant, secluded walks that culminate in a frothy ribbon of water pouring into an emerald pool.

Onamea and Boulder Creek Falls: Both these waterfalls lie within the Hawaii Tropical Bioreserve and Garden, 27-717 Mamalahoa Highway in Papaikou; https://htbg.com. Admission is $25 per person, but ...

On the Big Island, Hawaii Forest & Trail operates a well-stocked hiking store at Kailua-Kona, in addition to its fleet of vans. The company's Valley Waterfall Adventure cost $120 when I did it.