This quiet park's strange sedimentary spires were named after Kodak's color film.

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

The fifth-longest natural arch in the world, and the longest outside China.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

Most-visited and most-photographed slot canyon in the American Southwest.

This gorgeous beach hides behind two headlands in Oregon's Ecola State Park.

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

These unusual rooms on wheels are holdovers from the 1960s.

This church built atop a gas station promises to "equip you for the next stage in your life’s journey."

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

This pun was simply waiting to come to life, and one defense contractor made it so.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

The only place for a truly presidential dram.

Parking garage where Bob Woodward met Watergate source "Deep Throat."

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

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

A secretive collection featuring objects that were designed specifically for U.S. intelligence operations.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

This museum is dedicated to the most famous Irish writers in history.

An Irish town has built a statue to a silent film actor simply thanks to the holidays he once spent there.

A hugely vast Irish landscape of barren rock that stretches for miles.

This single room has survived the centuries with almost no deterioration.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.