This massive store is home to an eccentric collection of vintage, retro, and peculiar goods.

Atlanta's strange assortment of concrete pillars inspires reflection in some, confusion in others.

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

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Sniff the Titan Arum's rotting flesh.

The world's longest known cave system.

The "Seinfeld" diner.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

A beautiful geyser under environmental threat.

The first declared National Monument in the United States.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

A semi-scholarly approach to sex.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

Elevated freight railway turned wildly successful urban park.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Dramatic river bend surrounds a natural red-rocked pedestal.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

Most-visited and most-photographed slot canyon in the American Southwest.

World's first "penitentiary," meant to be humane, drove men insane.

Rippling sand dunes frozen in the Arizona rock.