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

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

Entombed in this strange, white stone hill are the deadly remains of radioactive weapons production.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

The world's largest man-made underground caverns offer unparalleled underwater wonders.

This strange, small castle on the bayou has withstood the test of time and weather.

The world-record holder for the longest bridge stretching continuously over water.

This statue inspired by Renoir's famous painting embodies the jovial spirit of Key West.

The highway's southernmost spot is a beloved local attraction.

Electrical pylon in the shape of Disney's beloved mouse.

The famous Beatle secretly visited this Illinois town several times to visit his sister.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

The "World's Largest Underground Business Complex," a 55,000,000-square-foot city underneath Missouri.

It may look like no more than a full-scale model, but every part of this full Space Shuttle stack had a working role in aviation history.

A propulsion engine testbed that paved the way for the Space Shuttle launch sits without recognition at this rocket center.

Huge abstract sculptures of the Puerto Rican Flag.

A mythical bird etched into the face of a rock doubles as the mascot for a nearby school.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

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

One of few surviving standpipe water towers in the U.S.

This wooded grove of beautiful hand-built stone grottos is a hidden gem within a shuttered Franciscan monastery.

This awkward aquarium sculpture is one of the strangest statues in Chicago.

The US Navy's only submarine museum is also home to the world's first nuclear submarine.

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