The entire length of the border is marked by a 20-foot-wide slash through the trees.

A tribute to Ponce de Leon's supposed quest for eternal youth.

Rusting away on the edge of New Jersey are the remains of a Cold War missile launch site.

Once a strategically imperative naval base, portions of this Bermuda dock complex now serve cruise ships.

Rediscovered after a century, the father of the American Navy was reinterred in something dredged up from Davy Jones' Locker.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

Where the embers of the Big Bang were first detected.

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

At 207 feet, one of the world's longest continuous escalators.

Home to items never before seen by the public.

Largest Roman Catholic church in North America.