This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

This peaceful gem in upstate New York was chosen as the future home of the 14th Dalai Lama's Library and Museum.

This exhibit allows visitors to wander through the interior of a replica Ice Age glacial cave.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

The site of the "Bone Wars" between two rival paleontologists during the dinosaur rush of the 19th century.

The Hudson River School comes alive at this palatial estate.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

The famed amusement district marks the beginning of summer with a wild procession of nautical creatures.

This enormous banquet-themed artwork honors over 1,000 notable women throughout history.

This supermarket is suspended 25 feet above an interstate highway.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

The site of the first "historically true" UFO encounter in the U.S.

A recreation of the doomed ocean liner in the middle of the Smoky Mountains.

The secret city built by the Manhattan Project.

A wall of chewing gum moonlights as collective art.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

A museum dedicated to the history and exploration of both popular music and science fiction.

Ironically this massive termite is the mascot for a company that is acclaimed for killing his kind.

Abandoned Coast Artillery fort now serves as graffiti canvas and sightseeing vantage point.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

Underground tunnels remain beneath this abandoned mental asylum.

This classic steam-powered train takes tourists on a nostalgic trip around the Connecticut River Valley.

Public outcry led to this bridge's unique character which celebrates a giant frog battle and also sewing.