Thanks to a quirk of elevation this gift shop produces magic doughnuts that are found nowhere else on Earth.

This open air cathedral invites all faiths to worship under the only roof big enough to fit them all: the sky.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

At one time this small mining village was the highest town in America but now it sits abandoned while the mine churns on.

Michael Heizer's masterwork in the Nevada Basin.

These aggressively sustainable art homes look like something out of 1970's science fiction.

A student driver's nightmare.

A former major munitions plant that has been converted into a sprawling art space.

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

A haunting tribute to pioneering photographer Clover Adams.

Largest Roman Catholic church in North America.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

The site of the climactic scene from the classic horror film is now a historic landmark.

The remains of Martha, the last known passenger pigeon, serve as a tool to educate about conservation.

The house where John Wilkes Booth conspired with his co-conspirators.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

Home to items never before seen by the public.

An enormous park-like oasis, full of famous Chicagoans' graves.

A Museum of Holography frozen in 1974.

A science teacher's dream.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

This shop for all your super spy needs hides an educational secret.

The world's only known button museum.