This raised bulls-eye visible from space was the subject of an intense geologic controversy.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

This site is home to ancient petroglyphs and pictographs dating back to 6,000 B.C.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

This ghost town was once a cult-like religious utopian settlement.

Oddly shaped rock formation, misassociated with a nearby utopian community.

A house carved into a rock in the 1940s.

It's safe—and permitted—to walk across these twin natural sandstone arches.

The only bridge in the United States where BASE jumping is legal without a permit year-round.

Home to items never before seen by the public.

The whimsical construction on the roof has given rise to many a Montgomery myth about its contents.

Colloquially known as "the lynching memorial," this is the United States' first memorial to the victims of racial terror at home.

Scattered around Atlanta are little doors with big charm.

After being inoperative for over half a century, this elaborate fountain in Atlanta's oldest park was restored to its former glory.

The first integrated firehouse in Atlanta houses a museum on the history of desegregation in the city's fire department.

Civil War soldiers, captains of industry, and paupers all interred on historic grounds.

To find the final resting place of a golf legend, just look for the grave covered in golf balls.

This ancient settlement contains some of the largest earthen mounds in North America.

Visitors can walk over the largest concentration of Columbian mammoths to have died from one event.

A bust of the entertainer and politician sits in an alcove at the Palm Springs Airport.

The ghostly remains of an accidental sea.

This outdoor observatory offers stellar views and a scale model of our solar system.

Crumbling pink walls and murder memorials preserve the pioneer history of Joshua Tree.

Meet 'Big Josh,' the 20-foot-tall muffler man.