The Bauhaus-style former industrial complex is considered the world's most beautiful coal mine.

Tucked away in a small German apartment is an eclectic museum devoted to West African vodun culture.

The monumental home of Prussia’s eccentric "Cannon King."

Admire the art and then buy a raccoon skull cleaned by flesh-eating beetles.

A Perpetually Under construction Park.

Eight "Guardians of Health" protect this art deco water tower from pollutants and bacteria.

One of the coolest murals in Minneapolis.

These curious caverns have been home to mushrooms, gangsters, and disco.

An old soap company building now houses one of Minneapolis’s oldest independent non-profit art galleries.

An industrial relic is now one of Europe's most staggering art spaces.

The Midwest's reigning king of surplus stores is full of nothing you need and everything you want.

This architectural beauty is the home to a personal collection of more than 600 examples of mechanical musical instruments.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

The stunning interior of this Gothic church is covered in ornate gold details.

An early Portuguese serial killer's head is alarmingly well preserved in a jar at the University of Lisbon.

An honorary saint of the people, Maria Adelaide became an incorrupt corpse, the clothes intact, exhaling “a strong scent of roses.”

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

A stunning 18th-century site where pilgrims ascend by a series of punishing stairs only to return via funicular.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

The world's oldest bookshop still in operation.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

This eccentrically decorated palace is replete with grottoes, fountains, tunnels, and caves.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

This historic Amsterdam bar used to accept sailor's monkeys as payment.