A bright little alley in La Boca is a part of tango history.

An architect transformed this abandoned cement factory into his castle-like workshop.

A gorgeous gilded tower houses what may be the world's largest collection of gin.

Ralph Waldo Emerson spent two years living here decades before it became a Frederick Law Olmsted-designed park.

A measuring mishap led to these artificial stone ladies losing their stomachs.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

Spend the night in this formerly abandoned traditional Scottish village.

A little piece of the Shire is hidden behind a plant nursery in Port Orchard, Washington.

An isolated 17th-century chapel on a remarkable site once dedicated to Celtic sun worship.

The perfectly named cave drop is the deepest in the continental United States, almost matching the height of Seattle’s Space Needle.

A fiery crater has been burning in the Karakum Desert since 1971.

Faces carved into the cliffs create an otherworldly walking trail.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.

The tradition of open-air secondhand and antiquarian bookselling in Paris dates back to the Renaissance.

Mortarless walls that stretch for miles are a lovely solution for creating grazing land in the harsh terrain of the Aran Islands.

This 170-year-old Swiss guesthouse built into the side of a mountain is best accessed by a cable car.

A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

A hermit's tiny cell built into the cliffside that saved him in South Pembrokeshire.

The steepest classic funicular in the world glides along a dizzying incline.

Remnants of the city's Soviet history hover over this modern fast-food outlet.

The vast chamber inside this abandoned cooling tower looks like something out of a sci-fi dystopia.

This former steel and coal plant is now a neon-lit industrial fantasia.