Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Wall Street has a new heroine, a bronze statue of a small but fierce girl.

This massive concrete sculpture is said to be the heaviest communist monument on Earth.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

The site of one of the largest prison escapes of World War II.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

Bloodstains can still be seen in this medieval church where two medics saved lives on D-Day.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.

The Lone Star plaque hangs in a bombed-out bunker in Normandy to honor a Texan colonel's heroic actions on D-Day.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

This symbol of the French Revolution still stands where it was first planted during the 18th-century.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

An effigy of a trapped paratrooper dangles from a Normandy church to commemorate one remarkable D-Day event.

The cluster of boulders near Fort Irwin is covered in military insignia.

Where NASA's satellites and rovers phone home.

The Brigadier General was so afraid of being buried alive that he had a buzzer installed in his mausoleum, just in case he woke up.

A four story, football field-sized, nine-grotto creation made of shells, minerals, and rare stones.

An eclectic assortment of medieval architecture in a small Iowa town.

This remote island in Iowa was abandoned after being devastated by flood.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.