The world-record holder for the longest bridge stretching continuously over water.

This Texas windmill field celebrates the power and majesty of the very winds that blow.

A flat-topped butte that makes a constant backdrop for Western art.

The final resting place of the most famous outlaw in the Old West.

A natural formation that resembles a camel resting in the New Mexico desert.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

The symbol was surreptitiously built into the river bank by German prisoners of war.

The spaceship-like theater, which is still in use, was one of the most popular exhibits at the 1964 New York World's Fair.

The oldest certified bowling alley in the United States is in the basement of this century-old bar.

A metal ring in the middle of the road marks the exact spot where the Soviet satellite crash-landed in 1962.

Six tiny houses built for working class people form the largest intentional cluster of Wright homes anywhere.

Wisconsin's most celebrated export gets the royal treatment on I-94.

A modest reminder of treacherous waters at the Golden Gate.

One of the last remnants of the city's Chinese nightclub scene is now a dive bar selling killer mai tais.

A hidden subterranean installation offers a view of the sky.

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

Its buzzing collection honors vibrator history.

Beloved bar home to musicians of all eras and reputations.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A winding path built in secret on the edge of the continent.

This ancient village provides insight into the complexity of the pre-Columbian Fremont Culture.