This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

This 600-year-old home seems to defy physics.

This former theme park in New York's Adirondack Mountains fell into ruin before being resurrected as a state-run campground

One of the most scenic falls in Massachusetts has a history of death and grim legend.

The oldest continuously inhabited street in America.

"A hideous albatross in the Hudson River Valley."

A building made mostly of cast iron features a 1:45 scale lego model of its self.

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.

A wall of chewing gum moonlights as collective art.

A walk through the historic city center, under the streets of Seattle.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

One of the few remaining ancient aqueducts described by Frontinus as 'the most solemn testimony of the Empire.'

These "mermaids" that surround a plaza in Segovia are rather sphinx-like.

A curious memento mori hangs in the magnificent Cathedral of Segovia.

This piece of early engineering is rather unknown despite its location in the heart of Madrid.

An automaton perched above an classic clock and watch store

Order cookies baked by cloistered nuns in a 400-year-old monastery.

After the queen of Spain had a dream where these statues fell and crushed her, they were removed from the palace and given new homes around Madrid.

A stone slab in Madrid marks the point from which the distances of Spain's national roads are measured.

For decades, Puerta del Sol has been illuminated by a giant, guitar-wielding bottle of sherry.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

A medieval village holds a very modern hotel.

The sweetest graveyard in the world is filled with headstones for dearly de-pinted ice cream flavors.