Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.

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

The secret city built by the Manhattan Project.

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

Every president in history is immortalized in bronze in downtown Rapid City.

The world's longest known cave system.

Browse through a century of this principality's first popular export.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The yawning maw of this pagan visage is said to bite off the hands of liars.

This bronze sculpture on a former squash court marks the secret origins of the Atomic Age.

This abstract sculpture is rumored to cast a hammer-and-sickle shadow once a year.

These murals have been brightening a Chicago beach for more than 30 years.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

A monument celebrating the idea of reaching inaccessible places.

An underwater statue of Christ blesses the depths off Key Largo.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

This Moab institution functions as both a rock store and a small natural history museum.

Dig for your own trilobites in this goldmine of invertebrates.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Despite its name, this fast food museum is actually a replica of the ninth McDonald's store.

At the largest railway museum in the United States, you can see everything from an early steam engine to a functioning Thomas the Tank Engine.

The sign to a demolished amusement park now stands in front of a local library.