This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

The oldest surviving bridge in New York City, which reopened to pedestrians in 2015.

A three-story copper skybridge connects two Manhattan buildings with Art Deco luxury.

Mysterious 500-year-old tapestries depict a unicorn hunt.

Sniff the Titan Arum's rotting flesh.

Ride the subways of yesteryear.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

This beautiful building in the heart of Manhattan's Financial District was empty for decades.

Try not to get slimed in Tribeca.

Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

Historic bar where the Singapore Sling cocktail was invented.

Northern Virginia’s iconic Vietnamese shopping center.

This Prescott institution is widely considered the oldest bar in Arizona.

The original shop where the iconic Belgian praline was invented.

This enigmatic artifact is a rare depiction of an ancient Iberian noblewoman.

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.

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

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

Commonly acknowledged as the only public monument to the Devil himself.

A lush indoor jungle fills this bustling Madrid transportation hub.