Site of the greatest known waterfall that ever existed.

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

A fine, large-aperture telescope available for public use.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

A museum displaying an impressive collection of pre-contact Makah artifacts.

At the most northwestern point of the contiguous United States lies a trail leading through an ancient forest to stunning cliff-side vistas and massive oceanside caves.

Site of a tragedy on the Oregon Trail.

This tree has witnessed nearly 1,000 years of history.

This large Sitka spruce that appears to be floating in mid-air, has defied logic for years.

A surreal landscape where fanged rocks rise from the ground and the ocean feels like a great mystery.

Stroll through a wonderland of stupendous moss-covered trees.

Tacoma's historic Beaux-Arts train station is now a federal courthouse featuring large-scale glass sculptures by artist Dale Chihuly.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

A beautiful footbridge with over 2,000 glass sculptures along the walls and ceiling.

An abandoned network of military bunkers and tunnels open for anyone willing to descend into the darkness.

This Puget Sound military post has a long, turbulent history as a gateway to the Pacific.

The window above the urinal in the men's restroom is a giant periscope that offers a panoramic view of Eagle Harbor.

The boulder is a landmark, public art, and an icon.

This 18-foot-tall public art installation is another of sculptor Thomas Dambo's trolls.

Mysterious ancient petroglyphs carved on a glacial boulder at the tip of Bainbridge Island.

Overlooking Puget Sound sits a garden with a Buddhist prayer wheel and an elaborate labyrinth.

This whimsical seashell-shaped place of worship was designed to blend into its surroundings.

A cluttered and astounding collection of antiquities and curiosities.

This early 19th-century graveyard is the final resting place of Vincent van Gogh's mother.