More than 5,000 contemporary and "historic" mustards from around the world.

Man-made geyser that rises to the exact height of the Gateway Arch.

This mosaic-covered bar is brimming with curated curios.

A plaque on the side of a parking garage marks the burial place of a great Ottawa chief.

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

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

A chessmaster's dream destination.

A commemoration of over 150 of St. Louis's favorite sons and daughters.

University City's quirkiest resident lives in a park named after its first.

This is not your typical jungle gym.

Giant works of art interspersed throughout meadows and woodlands offer a new discovery at every turn.

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

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

The juke joint where legendary soul artists ate, drank, and made merry.

This head-spinningly bizarre Depression-era art cave is wall-to-wall quartz and Jesus.

Home to drunken tower-climbing goats... seriously.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

Mobsters came for a soak in the hot springs, and stayed for the illegal gambling and bootlegging.

This historic hotel on Bathhouse Row in Hot Springs National Park has a storied history of gangsters and baseball greats.

Everything in this miniature world was handmade from matches, paperclips, wires, tin cans, and other everyday objects.

Where animatronic singing fish go to retire.

Art blooms at this unique outdoor gallery along the banks of the Arkansas River.

A beautiful South Korean gate and garden in Little Rock honors American Taekwondo.

Yup, that's where the name came from.