Look closely and you’ll notice that the color changes a third of the way up the tower.

One of the largest trees of its kind in California.

At 135 years old and counting, this historic print shop is heaven for poster nerds and music buffs.

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

This private residence was the template for one of the most beloved television homes of all time.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

The fifth-longest natural arch in the world, and the longest outside China.

The capital of the Cayman Islands is a center of offshore banking, but gets battered by blistering hurricanes.

The highest point in New Jersey is marked by a massive, if simply named, obelisk.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

Statues of Ramona Quimby, Henry Huggins, and Ribsy the dog in the park where their adventures "really happened."

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

Eccentric concrete mansion and museum designed and built by hand from the inside out.

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

100 massive sculptures in the Hudson River Valley.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The Pentagon sits on a former island that was in Virginia at low tide and D.C. at high tide.

At 207 feet, one of the world's longest continuous escalators.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

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

The magic's in the hole!