Two hundred tons of pioneer artifacts were painstakingly recovered from a shipwreck at the bottom of the Missouri River.

Crypt mausoleum in cathedral's basement contains relics of third century Roman martyr, Saint Vibiana.

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

A museum commemorating the Donora Smog, which killed 20 people in October 1948 and sparked national outrage over air pollution.

Giant granite rocks standing end-to-end like a train of circus elephants.

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

The first American department store, and home to the largest operating musical instrument in the world.

The Decoy Capital of the World.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

The land is home to swimming ponies and a legendary 18th-century treasure.

Once home to seven different roller coasters, Glen Echo has undergone many transformations since its founding in 1891.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

A white oak with property rights.

This simple home was the beginning of a long journey for the iconic Western film star.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

The only surviving prototype for Buckminster Fuller's house of the future.

A toxic ghost town sitting atop a massive coal fire.

When flour explodes, it's not a pretty sight.

A century-old cabin off of Highway 30 touts an unusual construction material: dinosaur bones.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

Memorializing an American tragedy of massive proportions.

Walk the whole Mississippi River!

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

I-95's Tijuana-style celebration of kitsch at the Carolina border.