Its floors are marked by colorful cues depicting Michigan's native fauna.

One of the few working locomotive roundhouses in the United States.

Detroit’s downtown castle is one of the oldest structures in the city.

World's largest Christmas store.

Dilapidated Mayan-themed ballroom was one of Detroit's most popular venues through the 40s.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

The California capital city once stood 10 feet lower than it does today.

A raised boardwalk winds through a thicket of stunted, century-old trees no more than nine feet tall.

Outposts of this restaurant chain were shaped like jaunty chapeaus.

A replica of the first public theater built in California.

A mysterious air force base built to resemble a Long Island fishing village.

A former poultry store that looks like a giant duck and is one of the "seven wonders" of Long Island.

Ride the subways of yesteryear.

An eccentric playboy's astounding natural history collection.

The only surviving sidewalk clock in Brooklyn.

Once called Winthrop Park in 1889, home to a decidedly sexy tribute to the Monitor vs. Merrimac battle.

A 120-year oil leak slowly unleashes more gallons of oil than the Exxon/Mobil disaster.

The home of aviation trailblazers, in a remote corner of the big city.

A formerly abandoned mental institute, now back in business.

What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

Michael Jackson got Bad and Crocodile Dundee walked on heads in this iconic Brooklyn subway station.

All that remains of a magnate's dream home is a historic gate and an abandoned public pool.

A gazebo that inspired the fifth episode of the "Twilight Zone" still stands in the creator's hometown

Residents of this Brooklyn neighborhood may be unaware their houses sit atop a buried trolley graveyard.