This church on a Tohono O'Odham reservation has stood since 1797.

A living snapshot of a different time in America is preserved and maintained by a community of volunteers.

This open-pit mine is now an abandoned symbol of Bisbee's copper-mining heritage.

One of America's oldest stadiums was also the site of one of the most brutal anti-labor acts in American history.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

Originally conceived as part of a proposed Arizona State Capitol building in the 1950s, this structure built in 2004 stands as a monument to the architect's legacy.

Millions of years of erosion created the feature for which this rock formation is aptly named.

This mural of the late David Bowie features eight colorful panels showcasing Bowie’s various alter egos.

An inconspicuous footbridge beloved by San Diego locals.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

Someone really, really wanted to save this fast-food icon from demolition.

A giant donut stands as a popular symbol of Los Angeles iconography.

A 1950s Googie burger stand is now a Los Angeles landmark.

A classic American barn that was the home of a classic American television star.

The first home and studio that belonged to the famous architect.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

Beloved bar home to musicians of all eras and reputations.

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

One of Frank Lloyd Wright's greatest—and favorite—architectural masterpieces was almost lost.

This giant temperature attraction created some giant electric bills.

A self-explanatory attraction allows fans to respectfully remember and honor a comedy legend.

The behemoth beasts engaged in an epic battle is the second-tallest statue in the contiguous United States.

A gaudy painted elephant stands in memory of south Florida's fallen carnies.