South Carolina's last remaining slavery auction house is now a museum devoted to its own tragic history.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

A curious collection of oddities including a lock of Alexander Hamilton's hair and Harry Houdini's ouija board.

Garden dedicated to native carnivorous plants and site of huge flytrap heist.

This North Carolina store preserves a historic moment in America's movement for racial equality.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

This 19th-century building inadvertently preserved the handprints of its builders within its walls.

The world's longest known cave system.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Home with Gothic windows featured in a famous painting.

An Iowa town celebrates its heritage with the tallest working Dutch windmill in North America.

This once rural mansion now sits in the heart of the city.

A fitting attraction for the corn capital of the world.

Just a man taking his prehistoric pet for a stroll.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

This rustic old building is said to be the most photographed barn in America.

Around half a million years ago, these magnificent columnar basalt cliffs were formed from cooling lava.

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

A beautiful geyser under environmental threat.

An architect's childhood fantasy treehouse made real.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.