About as hidden as can be, this specialty coffee shop is wedged between multi-story buildings at the end of a dark, skinny alleyway in Seoul.

The site where the Emperor of Korea performed the long-forbidden "rite of heaven" to demonstrate his absolute sovereignty.

A sparkling sandstone cliffside that's worth a visit while it still exists.

Built over an abandoned train yard, this hidden gem is full of winding paths and offers gorgeous views of Sydney Harbour.

It's said to be one of the most significant collections of contemporary Chinese art in the world.

This grim museum collects artifacts and evidence of some of the most sensational antipodean crimes.

A 19th-century perch for spotting sailing ships now boasts one of the most iconic views in the Southern Hemisphere.

This work of art was designed to represent the Tarpeian Way Quarry that once dominated the area.

This Japanese-inspired labyrinth of hot springs is hidden in a Chilean forest.

A wooden dock art installation on Chiloé Island taps into the island's indigenous mythology.

A record-breaking pool that uses computers to turn ocean water into cleaner, private swimming water.

This iconic hilltop church doubled as a lighthouse in the 19th century, guiding ships into the port of Valparaíso.

Buying your medicine at this particular pharmacy is like taking a trip back in time.

A pocket of serenity in hectic Buenos Aires, complete with a peaceful courtyard and massive library.

A poet in love with the Parana River built this unique house that became a landmark.

This colossal structure and its accompanying angel often play tricks on the eyes.

A replica of a beloved, delicately-balanced granite boulder.

The humble tomb of an Argentine general, hand-built by his son using stones brought down from the Andes.

Guitar made of trees, dedicated to a man's lost love.

The house of a former Argentinian president stands protected within a large glass case.

This plaza at the end of the world teems with monumental tributes to a problematic history, and laser discs.

A vast landscape of craters created by meteorites.

A memorial to the victims of Argentina's "Dirty War."

The clients of these mysterious hand-crafted funeral cars took their last ride in style.