The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

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

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

Wild lights and sound effects turn a walk through some caves into an eye-popping 1960s tourist attraction.

After a water tower painting was accused of being an ad, a simple fix was made that gave the city a motto.

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

One of the last few period-correct, hand-operated canal locks in the country.

A gas station has taken the place of the home of the 19th American President.

A circle of giant painted vases in the former pottery capital of the United States.

The nearly 200-year-old building displays a perplexing grammatical error.

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

Strange red rock formations that have been attributed to a higher power for hundreds of years.

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

A giant lumpy candle serves as a beacon for this highly scented pit stop.

This steamer is known as "The ship that built Cleveland."

The only presidential monument to display a late POTUS's actual casket.

A jukebox headstone marks the grave of the Cleveland disc jockey credited with coining the term “rock 'n' roll."

The angel of death appears to weep black tears at this grave marker.

Inside the unassuming cemetery chapel is a magnificent stained glass window and mosaics.

An unoccupied lighthouse encased in layers of ice from the waters of Lake Erie.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

This kitschy tavern is also home to rare early editions of "Treasure Island."

A 30-foot stack of piano keys memorializes one of the greatest keys players in jazz history.

This restaurant proudly displays bread signed by the 39th president.