This World War II-era bunker is now packed with posters and props from movies and TV shows filmed nearby.

Climbing this abandoned railway leads to breathtaking vistas of O‘ahu.

A unique set of caves that spits waves back out into the ocean.

This WWII plane died a quiet death, and is now a garden eel playground.

Try your hand at old-fashioned coffee growing at this museum devoted to one of the world's most coveted beans.

This legendary urban waterfall creates a dazzling display of rainbows.

A controversial memorial at the place where Captain Cook met his violent end.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

This Hawaiian cattle ranch acts as a museum devoted to the island cowboys that predate the wild west.

This unusual lava tube spouts seawater during high surf.

A cooled lava flow from the Haleakalā volcano formed these surreal-looking columnar basalt structures.

Take shelter from Hawai'i's tropical heat under the massive canopy of largest Banyan tree on the island.

A tunnel of hardened lava along Maui’s famous Road to Hana.

This tiny Hawaiian island is slowly coming back to life after being bombed during naval training exercises.

Once home to over 8,000 exiled Hawaiians suffering from Hansen's Disease.

A grove of "candelabra redwoods" deep in California's Lost Coast.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

This little museum has an exhibit devoted to the elusive forest denizens.

Humboldt's human-powered sculptures race across land and sea for days on end in a wacky quest for dominance.

Chewing gum tycoon's memorial lies perched over wife's botanical gardens on Santa Catalina Island.

A herd of 150 bison live on California's Santa Catalina Island and are at the heart of an ongoing debate between environmental protection and economic expansion.

The site of murders and Satanic cult gatherings.

This stately structure has been abandoned for half a century.

This enormous World War II relic is one of the largest wooden structures in the world.