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

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

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

The man who wasn't there.

A modernist landscape of water and sci-fi concrete.

The world's second-longest burning light bulb.

Belly up to the bar in Cowtown, don't forget to buy some boots.

Along the historic Mother Road is an old gas station with a secret counterfeiting past.

Travel through the hidden underbelly of the city in colorful tunnels filled with art and history exhibits.

The oldest family-run restaurant in the United States is a living museum of New Orleans dining history.

The second oldest continuously operating bar in Louisiana.

After 97 years of constant vigilance from the dome of the Texas State Capitol, the original Goddess of Liberty retired to a life of climate-controlled leisure.

A 200-year-old building in the French Quarter that was to be Napoleon's home in the New World.

A museum and shop on Bourbon Street located in the French Quarter.

Once the site of a Native American harvest festival, this humble clearing later played an invaluable role in the birth of jazz.

A treasure trove of rare and exquisitely detailed antiques

This macabre shop, filled with art, oddities, and taxidermy is hidden in the heart of the French Quarter.

After the oysters have been shucked, and the restaurant's been shuttered, the terrazzo sidewalk from the 1940s is all that remains.

This cathedral dedicated to Louis IX, sainted King of France, holds many secrets.

The oldest operational cathedral in the U.S. has one shell of a way of projecting speakers' voices.

This distinctive Crescent City tradition dates back to the days of horse-drawn carriages.

A small park on Bourbon Street features life-size bronze statues of New Orleans musicians.

This sculpture of a bowler hat is complemented by a matching umbrella a few blocks away.

A "Texanic" (gigantic Texas) collection of Art Deco architecture at Dallas' historic Fair Park.