High on a hill overlooking Los Angeles lives a world famous, high-power conical Tesla Coil.

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

This opulent hotel has been visited by Spider-Man, Charlie's Angels, and the Ghostbusters.

Legend says train robbers stashed their gold within the depths of this unusual cave.

Make a wish at what might be America's only Catholic shrine to a sinner.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

Where commuters walk through remnants of an ancient Greek necropolis.

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

Nine centuries-old fortresses guard the walls of this medieval Romanian city.

Da Vinci's equestrian statue, 500 years in the making.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

France's most famous cemetery, with some of its most curious tombs.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

Late at night, the bust of the "Dracula" actor was snuck onto the facade of this Budapest castle.

This Hungarian castle was built out of cardboard and wood until it proved so popular that it got upgraded to stone.

Museum dedicated to the terror regimes of Hungary.

This collection of neon icons is preserving Arizona's history, one sign at a time.

Located on 420 acres in the high desert, this spiritual center is dedicated to the "science of the future."

Religious statues built because of one man's bargain with God fill this peaceful sculpture garden.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.