The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

This is the oldest Roman-made bridge in the city still existing in its original state.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

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

This simple home was the beginning of a long journey for the iconic Western film star.

A Mormon place of exile in Missouri.

The obelisk meant to mark the founding father's grave at Monticello is actually on the University of Missouri campus.

This pristinely abandoned filling station on the edge of a graveyard is populated solely by unsettling mannequins.

A celebration of the animation wizard's childhood home and antique railroad memorabilia collection.

World's smallest skyscraper, the product of a remarkable con.

Civil War dumping ground for the bodies of terrorized Union sympathizers.

Founded by a Basque immigrant, Mexico City's oldest bakery has a history dating back to 1870.

The remains of an Aztec school and various intriguing artifacts lie below a modern cultural center.

This site honors the end of a 100-year boundary dispute between the United States and Mexico—all started by a river's shifting course.

This historical marker is all that remains of Octagon City, Kansas, a failed vegetarian utopia.

Sid Vicious famously punched a hole in the wall of this iconic music venue.

The only fully-realized skyscraper built by the famed American architect, Frank Lloyd Wright.

A detached cement mixer has been transformed to resemble a relic from some obscure NASA mission to Oklahoma.

The abandoned train depot now doubles as a well-placed rest stop for those who take the road less traveled.

This former Mormon settlement is reemerging from the receding waters of Lake Mead.

An old railroad grade built for the construction of Hoover Dam is now a recreational trail featuring several tunnels and sweeping views of Lake Mead.