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

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

At 207 feet, one of the world's longest continuous escalators.

The only recreation of William Shakespeare's indoor playhouse.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

The largest island on the great salt lake is home to curious creatures and strange stories.

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

A monument celebrating the idea of reaching inaccessible places.

"We Seceded Where Others Failed."

Only known mainland rookery of the threatened Stellar sea lion.

Steepest flood safety railway in the entire world.

Deep scars on the earth left by the Ice Age.

The spectacular collection of one of the world's best woodcarvers.

Portlandia is the second-largest copper repoussé statue in the United States.

The magic's in the hole!

Small plaque marks the spot, but the true center is located about half a mile away on a private pig farm.

It's big, it's a ball, and it's made of twine—the world's largest of its kind.

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

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

A wall of chewing gum moonlights as collective art.

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

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

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