A tunnel with windows, so you don't miss out on the impressive views.

Built in 1917, this building is home to the last working spring-loaded dance floor in Utah.

An empty mine that some believe will suddenly be filled with fortune and treasures at the end of the world.

This tiny home built on revenge appears to be scarcely wider than a Volkswagen.

Now housed in a museum, this giant pink elephant stood in downtown Seattle for more than 60 years.

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

The four tall pillars once marked the entrance of the historic Seattle church that fought for women's suffrage and civil rights.

A community gathering place that once housed half-ton tanks and the World's Fair.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

This grand old 80-foot sequoia towers above the buildings in the city’s retail center.

Deep into the lower floors of Pike Place, find a date with fowl fate.

A wall of chewing gum moonlights as collective art.

Activists are fighting to preserve these unfinished highway ramps as a tribute to the citizen revolt that halted their construction decades ago.

The longest and widest floating bridge in the world.

The "Gateway to the Arctic" connects Barrow's indigenous population with the sea and its traditional industry: whaling.

Commemorating the lives of a renowned humorist and a famed aviator who died in a plane crash in northern Alaska.

Buy your friend a drink or staple some cash to the wall for the next guy at the Salty Dawg Saloon.

Four-story concrete hotel never opened to customers.

Permanent exhibit reminds visitors of the Exxon Valdez.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

Running under an entire mountain, the longest highway tunnel in North America is kept fresh using portal fans and jet fans.

During the summer, surfers in Alaska take advantage of this inlet’s unusual water patterns.

Clean, cold drinking water flows from a nondescript pipe in a roadside rock face.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.