This astonishingly geometric cave has inspired everyone from Jules Verne to Pink Floyd.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

The remnants of a Gilded Age elegance preserved in the middle of a stark modern tower.

Historic Hull Street was actually the first street with a proper name in the Boston area.

One of the last remaining World War II Victory Gardens in the U.S. is quietly growing across from Fenway Park.

No one messes with the Massachusetts sacred cod, not this time...

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Two thousand artifacts from around the world collected by one woman who loved to travel.

An enormous, inside-out glass globe built in 1935.

Meant to be a lavish presidential home, the palace became a symbol of the fall of South Vietnam.

An extravagant monument to an extravagantly unpopular Emperor.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

Legions of Roman soldiers bathed in this ancient spa complex under a Budapest transit station.

The romantic garden was the epicenter of the Hungarian art scene in the 1880s.

A lonely beacon, precariously perched atop a remote sliver of rock.

This is what trains will look like after the zombie apocalypse.

A remarkable medieval structure born from a 14th-century disaster.

This luscious masterpiece created by landscape designer Bevis Bawa inspired the work of his brother, a famous Sri Lankan architect.

Centuries of human activity have forged an eerie landscape of ruins and craters on an exposed and windswept hilltop.

The highest lighthouse in Scotland shines from an abandoned island.

Happy harbor seals frolic and snooze on this warm, sandy stretch of coast.

The bombed out remains of the old church were kept intact next to the new one, as a reminder of the futility of war.

The enormous diamond-shaped building packs a trove of academic and literary treasures into one futuristic space.