South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

Tiny historical streetcars wind through a small scale version of Crescent City in this whimsical train garden.

A psychological self-portrait in the form of a giant, segmented head.

The highest point in Tennessee, Clingmans Dome bears witness to the ravages of one type of insect.

A retired tobacco farmer's pet project turned into a sturdy miniature city.

A humble plaque marks the site where the country music legend was found dead in his Cadillac.

Follow the path behind this treat-slinging camper van to a sculpture garden in the forest.

The birthplace of Appalachia's only first lady, who some have dubbed the United States' "first female president."

This museum explores the history of stickers and is home to RePEELed, an exhibit featuring sticker art from around the world.

Abraham Lincoln's vice president took his last breath here on July 4, 1891.

This museum explores the history of policing and is also home to a very popular taxidermied duck.

The second-oldest garden cemetery in the U.S. was also a college brainstorm spot of Stephen King.

According to the experts at the Guinness World's Record office, this is the longest candy counter in the world.

Built for television, this statue now serves as an unlikely memorial to a fireman who died on 9/11.

This waterfront museum in Maine is dedicated to the history of the smoked-herring trade.

The 32nd president's sprawling cottage sits on an island enclave jointly managed by the U.S. and Canada.

A quarter mile off the coastal tip of Maine you'll find the "Beloved Island" of Franklin Delano Roosevelt.

This candy-striped tower is the farthest east you can go in the United States.

The first ever diner included on the National Register of Historic Places is famous for its custard French toast.

This site commemorates the former inn and restaurant where the chocolate chip cookie was first crafted.

One of two lighted lanterns hung in the church belfry on the eve of the Revolutionary War to warn that the British were on their way.