Granting the right of way to ships over surface traffic since 1917.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

A massive sea stack famous for its appearance in The Goonies.

100-year-old shipwreck you can walk up to at low tide.

This graveyard is the eternal home of many brave pioneers who settled the Great Northwest.

A Roman-style column in Oregon hides a spiral staircase inside.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

An extraordinary mixture of natural beauty and man-made phenomena.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

This massive redwood tree has a hole in the base big enough to drive through.

Watch the newest land on the planet form before your eyes.

This narrow coastline trail through the dense Kauai wilderness is among the most beautiful and dangerous in the world.

These ancient sacred grounds granted amnesty to those who managed to reach them.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

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

The grand marquee of this abandoned Hawaiian theater remembers the building's elegant past.

Doris Duke's lasting collection of Islamic Art, hidden in a Hawaiian paradise.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

This museum of Hawaiian and Polynesian culture is the legacy of the last descendant of the Kamehameha Dynasty.

An authentic replica of an Asian temple and garden hidden amongst the natural beauty of Hawai'i.

Race through the maze, get your name on the sign.