This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

This crucial gathering spot along the "hippie trail" still displays old notes between traveling beatniks and backpackers.

She stares out across six lanes of traffic, clutching a musket and infant with determination.

The fifth geographically in a series of twelve statues commemorating westward expansion in the United States.

This 25-foot tall clock tower commemorates the start of one of America's foremost shopping districts and the end of the historic Palm Beach Pier.

This sinkhole is disguised as a pond and named after the man who stumbled upon it.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

A home that witnessed Civil War combat on the Sunken Road has the battle scars to prove it.

The tomb was guarded by soldiers from both sides of the war, and some left their initials carved in the brick.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

The only female equestrian statue in Washington, D.C. is a 15th-century French heroine.

A gift from Japan, 17th-century lantern stands among the cherry trees at D.C.'s Tidal Basin.

On the Fourth of July this area will transform into a Pompeii-like storm of falling embers and ash.

After James Madison's death, his wife and former First Lady Dolley Madison lived in this yellow building near the White House.

Italian cave with exceptional acoustics and an unsavory history.

The capital of the Cayman Islands is a center of offshore banking, but gets battered by blistering hurricanes.

A full-service gas station known as the oldest in America.

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

This church was transported brick by brick from the ruins of a 16th-century city into Panama City's current historic district.

Believe it or not, the now-ubiquitous California avocado originated in Guatemala.

Budapest's Communist-era statues, banished to the suburbs.

The historic building's ornate stained glass fixture has survived the devastating 1906 earthquake, ensuing fires, and multiple redevelopment attempts.

America's oldest Italian restaurant is a San Francisco institution.

The oldest dim sum restaurant in the United States is a nostalgic jewel.