During the 19th-century, this park was a vital trading fort.

A sculpture of a giant man escaping from the depths of the Earth.

Three markers installed over the course of 140 years mark the point where Arkansas, Missouri, and Oklahoma converge.

North America's oldest authentic African Village.

This psychedelic tromp l'oeil seems to be beckoning drivers to crash into a wall.

This recently rediscovered Civil War-era submarine was the first to ever sink an enemy ship.

Its founder calls it a "proletariat art renaissance".

Tucked away between two 19th-century buildings, this small shop specializes in the macabre.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

This abandoned prison castle has become an imposing gallery of graffiti art.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.