Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

World's first "penitentiary," meant to be humane, drove men insane.

Artistic tombs, monuments, and a beautiful "Hall of Fame" lurk inside this cemetery.

Years of neglect and nature took a toll on this 19th-century lighthouse.

A magnificent waterfall nestled in the heart of the El Yunque National Forest.

The bat-covered home of one of the world's most popular brands of rum is located on a tropical Art Deco campus.

Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

The world's brightest bioluminescent bay.

Puerto Rico's oldest rum producer started its 140-year-old business with "a little barrel."

This Japanese treats shop may have been the first business to mass-produce fortune cookies in the United States.

This painted marvel is San Francisco's 400-foot ode to urban biking.

This contorting sculpture is the tallest in San Francisco.

These WWII-era murals were initially booed as a libelous portrayal of the American dream but have survived multiple attempts to have them destroyed.

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

A garden oasis filled with flowers mentioned in the works of William Shakespeare.

The interior of the Overlook Hotel in "The Shining" was based on this Yosemite original.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Countless grotesque faces stare out from this eerie Prague art wall.

Two stunning 17th-century libraries and a cabinet of curiosities.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.