This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This abstract sculpture is rumored to cast a hammer-and-sickle shadow once a year.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

One of the largest pieces of scientific equipment ever carried on a NASA space shuttle sits in a Chicago alley.

Partially submerged Buddha heads freckle Chicago’s neighborhoods.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

A display of magnificent stained glass windows is the first exhibit of its kind.

These chunky stone towers out in Lake Michigan are the key to Chicago’s drinking water.

The highest point in Washington state is a volcano covered in glaciers.

From overly ambitious (and eventually abandoned) atomic dream to bustling office park.

The second tallest railway trestle bridge in America.

Shoreline strewn with the remains of ghostly fallen trees.

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

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

This large artificial waterfall in Washington state was merely an incidental byproduct of a technological megaproject.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

Spectacular views await visitors to this lake.

The only road through the heart of Glacier National Park.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

The oldest badlands in North America, Makoshika State Park takes it name from the Lakota words for broken land.

These former Cold War launch sites have been preserved for tourists to see where the button might have been pushed.

The remnants of an early American attempt at missile defense.

Part of a secret 1970s nuclear defense program is now open to the public.