More than 12,000 years ago, this park was a playground for mastodons.

People of the Plum Bayou culture built these enormous mounds over 1,000 years ago.

Memorials are nearly all that remains of this Arkansas prison camp, where thousands of Japanese Americans were forcibly relocated during World War II.

Explore the cabin where the famed abolitionist once lived and the site where he fought the Battle of Osawatomie.

The ruins of the northernmost pueblo in the Americas tell the story of a mixing of native cultures.

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

Hundreds of graffiti artists have decorated this flood-wall on the west bank of the Mississippi River.

In the Compton Hill Reservoir Park sits a statue whose lack of clothing caused a scandal for the group that commissioned it.

A museum dedicated to man's boldest venture.

The granite monument is engraved with the image of the talking horse's head coming through a barn door.

This staircase in a lush tropical grotto was built by enslaved laborers and renamed to honor Queen Victoria's role in ending slavery in the British Empire.

In Edwin Hubble's hometown, a scale model of the groundbreaking telescope that was named in his honor.

Curious cave that stays a cool 56 degrees all year long.

A historic house in St. Louis was plagued by a series of suicides committed by family members involved in a successful brewery.

Kentucky's anomalous peninsula projecting into the Mississippi River, site of legendary earthquakes and local feuds.

This museum presents a dogged pursuit of 500 years of veterinary history.

The only pig museum in the U.S. holds one of the world's largest collections of pig items.

Famous church recognized for both its unique design and disciplined monks that live according to the Benedictine discipline.

When Joseph Marconnott died, he had a unique final wish: to be mummified and put on display.

This Great Plains museum pays tribute to both the prosperity and tragedy of the North American fur trade.

An experimental, automotive replica of Stonehenge.

The oldest extant wooden jail in South Dakota and possibly the United States. 

This massive railroad spike celebrates the 1939 premiere of the movie “Union Pacific.”

The world's only three-story rotary jail is now a museum to a bizarre trend in prison design.