A second generation sun-powered marvel lights up the night.

The blinking light atop the iconic landmark has been sending secret messages for decades.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

World-famous, Pink's still manages to keep its prized cult fetish status.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

When flour explodes, it's not a pretty sight.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

Hot Doug's "Hot Dog" Stand.

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

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

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

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

Elvis's own personal tropical hideaway.

All you ever needed or wanted to know about America's favorite whiskey, but not a drop to drink.

This magnificent Cincinnati graveyard is also a popular public park.

A retired subway car stands alone in a field in the middle of Queens.

Elevated freight railway turned wildly successful urban park.

The rough and tumble president's childhood home displays the shirt he was once shot in and the speech that saved him.

A grand New York post office that is home to mailman Santas, scraps of postal history, and a pneumatic mail system.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.

5,000 skulls in memorial to those killed by the Khmer Rouge.

Khmer Rouge's high security prison.