The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

An extraordinary collection of vampire-themed antiques lurks on the second floor of a store.

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

One of Philadelphia's largest murals resides hidden under this bridge.

Step into a pastel time capsule where candy is truly dandy.

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

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

World's first "penitentiary," meant to be humane, drove men insane.

Dr Barnes' $25 billion private collection of art and arboretum.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

This elaborate towering structure was once famed for its revolutionary height.

Why have you never heard of the second most popular tourist site in New York?

Take a trip back to the 1950s and the heyday of the road trip along Historic Route 20.

100 massive sculptures in the Hudson River Valley.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

This futuristic airport terminal was abandoned for decades before reopening as a hotel—with a vintage plane of its own parked out back.

The land is home to swimming ponies and a legendary 18th-century treasure.

The Cadillac Ranch for monster truck aficionados.

One man's quest to save his town with a trail of record-breaking sculptures.

A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

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

Mysterious 500-year-old tapestries depict a unicorn hunt.