An artificial crater field that trained astronauts for lunar exploration.

This Route 66 classic sports a giant fiberglass rabbit that you can ride.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

On the outskirts of a reborn ghost town, a decaying post office remembers the bad old days.

A spiritual vortex among the red rocks in Sedona.

See massive fossils that are over 200 million years old in northeastern Arizona.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

A reproduction of earth's many biomes.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

This awkward aquarium sculpture is one of the strangest statues in Chicago.

No one knows how many bodies are in this vault in a Chicago public park.

The faint remains of a Polish news empire still linger.

A long lost multi-cultural music venue used to reside in the bottom floor of Chicago's Flat Iron Building.

Rifle through images of skyscrapers, Worlds Fairs, and more in the largest public postcard repository in America.

Landmark Chicago building narrowly avoided destruction.

To find the "unicorns of the deep" you've got to go downstairs.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

Odd, decrepit fountain honors Chicago author who had mixed feelings about his hometown.

A tribute to one granddaughter's old apartment which now represents the whims of each visitor.

Huge abstract sculptures of the Puerto Rican Flag.

One-of-a-kind preserved ruins of an abandoned 1880s church in Chicago's Pilsen neighborhood.

The original Garfield station is the oldest station facility on the "L", with the station house dating from 1892.

The original vault that held the president's remains still stands, empty, not far from where he was finally buried.

It was originally part of a "terrible lizards" collection at the 1964 New York World’s Fair.