Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The only parking meter in the entire town, it is surrounded by 100 free spaces.

If you dial the number in this abandoned office window "Sam Spade’s" secretary will ask you to leave a message.

The largest drain hole in the world.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A one-of-a-kind collection of a unique medium.

A sharp bend in a dramatic river canyon cut through red rocks.

A crumbling hospital from the 1850s on Roosevelt Island.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Large but largely ignored, these 42 life-size Liberty Bell replicas were a peculiar, unexplained feature on the facade of a Macy's department store.

A sign at the end of the Santa Monica Pier marks the traditional end of the legendary American highway.

A Masterpiece with a Tragic History.

The last Americana on Route 66.

This dormant volcanic crater has been converted from a roiling pit of magma to a pleasant hiking spot.

The ghost town that ended up on Ebay.

At the "Garage Mahal" in Houston, car culture is about more than just driving.

The only place to see live frogs don pigtails and top hats, then eat their scrumptious legs.

One man's grief over the national tragedy has manifested in a pod of homemade whales on his front lawn.

A grandiose octagonal home crowned by a large dome stands out among the antebellum mansions.

This racially troublesome eatery thought a new coat of paint could erase its offensive connotations.

An eerie and beautiful group of columns mark the site of a grand mansion lost to time and fire.

A 19th-century Gothic, castle-like statehouse by the Mississippi River.

Every year, a Louisiana town remembers a brief Civil War truce inspired by Masonic brotherhood.

Dothan, Alabama has been invaded by scores of anthropomorphic peanuts.