This 19th-century museum inside of a lighthouse is only accessible during low tide.

Canyon walls shrouded in ferns.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

This massive redwood tree has a drive-thru tunnel carved out of its trunk.

A simple plaque remembers a California island massacre that claimed more than 100 lives.

Commonly referred to as the most photographed Victorian home in the United States.

A beautiful geyser under environmental threat.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

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

This former coal gasification plant found a curious second life as a popular public park.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

The magic's in the hole!

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

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

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A museum dedicated to the history and exploration of both popular music and science fiction.

A giant Troll lurks under one of Seattle's oldest bridges.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.