Island where motor vehicles are banned -- home to the only carless highway in the United States.

Home of the International Space Hall of Fame.

Visitors to this library are in for a real-world education in modernist architecture.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

The only surviving prototype for Buckminster Fuller's house of the future.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Arguably the best example of an authentic Dutch windmill in the United States, rivaling its counterparts in the Netherlands.

Surrounded by a hundred mile radius of billboards, Little America is a roadside attraction whose primary appeal is hospitality.

Metal water storage tank turned ethereal concert hall.

Final resting place of Geronimo, Quanah Parker, and the first atomic gun ever fired.

The place of worship erected not once, but three times in one of the most desolate places on Earth.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

Home of the "true" equator.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

The first declared National Monument in the United States.

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

Death rituals and sacrifice inside a Peruvian megalith.

Preserved Inca city and site of the last Inca stronghold against the Spanish conquistadors.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

Romania's triumphal arch looks out over Bucharest.

Looming communist pillar with a Czech twist.

Macabre astrological automaton clock dating to the late 1400s.