This Cape Cod museum exhibits what it claims is the only authenticated pirate treasure in the world.

The final resting place of New England's last "vampire."

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."

She become one of the first women to serve in the United States military by secretly dressing like a man.

A 19th-century smallpox cemetery is being reclaimed by scrub forest and sand dunes.

This site commemorates the former inn and restaurant where the chocolate chip cookie was first crafted.

The ruins of one of the first railroads in the U.S. lie hidden within a neighborhood cul-de-sac.

The beautiful baroque library of the Hapsburg empire.

A museum marks and documents the site of the Titanic's launch.

Belfast's namesake river still winds below the city center, hidden from sight.

These barriers stand as stark reminders of Northern Ireland's troubled past.

A small plaque highlights the damage caused by German air raids during World War II.

This Victorian-era public house has set the standard for pub-style elegance for over a hundred years.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

Dramatic river bend surrounds a natural red-rocked pedestal.

Most-visited and most-photographed slot canyon in the American Southwest.

Rippling sand dunes frozen in the Arizona rock.

The geographical center of Budapest is marked with a 10-foot-tall stylized zero.

Built for television, this statue now serves as an unlikely memorial to a fireman who died on 9/11.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

Museum dedicated to the terror regimes of Hungary.

Built in 1870 at the bridge that connected Buda and Pest, this spectacular incline railway was almost lost forever during World War II.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.