This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

A naturally mummified 2,000-year-old man.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Scattered throughout London are ancient remnants of the city's former bounding wall.

Famously misunderstood wonder of the ancient world

This private residence was the template for one of the most beloved television homes of all time.

A grand Gothic Revival basilica with stained glass depictions of Montreal's religious history has only one soul resting in its crypt.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

City law dictates that this mountaintop cathedral containing the heart of a saint is to remain the tallest building in town.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

In which a local geological marvel becomes a quaint roadside attraction.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

The only swimming pool listed on the National Register of Historic Places is emptied and refilled each day with naturally filtered water.

This shack nestled in a 120-acre forest of maple trees in Mont-Rigaud is a wonderland of sugary syrup.

The best Tiki bar in Las Vegas.

This dramatic rail curve was once the target of a failed Nazi attack.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

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.

The perfectly preserved underground rooms where Churchill plotted the war against Germany.

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

The unbelievably opulent home built for an infamous newspaperman.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.