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

This working class sculpture pounds his hammer all the livelong day.

This sculpture forces visitors to confront their relationship with space.

The Denny Substation has been called "the coolest substation in the world" and sits in a densely populated Seattle neighborhood.

More than 7,000 gallons of water pour over these cascading red quartzite waterfalls every second.

This Wild West attraction is alive with glitching automatons.

It's a pretty creepy lock-up.

This Buddhist temple is home to a number of towering statues spread over a peaceful wooded park.

Over 12,500 words are scrawled across each room of this historic plantation house and no one knows why.

The world's largest occupied bat houses hold hundreds of thousands of flying mammals.

Though illegal, city officials have made an exception for this work of art.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

These giant metal horses graze on a hilltop near the Montana highway.

Millions of glowing microscopic organisms light up the waters of this luminous lagoon.

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

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 drive-thru tunnel carved out of its trunk.

A tourist attraction founded around a slumping cabin.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

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

The building features one of the last remaining free-floating spiral grand staircases in the U.S.

City Council meetings still happen in this historic building, impeccably preserved on the inside.

This statue and its surrounding plaques tells the story of Ko-kwal-alwoot and the kinship between the Samish people and the sea.

A rare tour of a commercial jet assembly plant, held inside one of the largest buildings in the world.