Once featuring over 60 miniature replicas of famous Chinese locations, the Splendid China theme park was completely abandoned and is now mostly rubble.

The deepest metro station in the world.

Luxurious hotel designed to stir the imagination of its many visitors.

A mysterious light floating in the trees of Arkansas may be a piezoelectric effect.

These millipedes glow not out of attraction, but as a not-too-subtle warning.

This former prison now houses a lovely library devoted to Quebec's oft-maligned English-speaking history.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Among the ostentatious rococo ornamentation of this church, an image of death cuts the life-thread.

Erosion and time have created a naturally-formed water park.

The convergence of two currents makes this a surprisingly pleasant getaway in the Arctic Circle.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

This religious museum resides in a church crypt next to the founder's house.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

A discreet little stairway on St. Nicholas Avenue leads to a quaint and unexpected cobblestone street of 19th century wooden rowhouses.

Beneath the city of Lourdes, France is a massive, concrete church.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

A place of great reverence for Trekkies everywhere, a hero's future birthplace.

The secret city built by the Manhattan Project.

A large stone map of Arkansas awaits visitors to its highest point.

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

Venice's "Island of the Mad."

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.