These quaint French houses dangle precariously over a precipice.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

A cave dwelling that was started by the Celts, expanded by monks, and finished by knights.

This building’s ghostly exterior reflects its former lives as a prison, school, and funeral home.

Abandoned railway line circling the city of Paris.

Notorious artist squat renovated into legal studios.

This massive library holds what was once the largest book collection in the world.

The celebrated eyesore created by starry-eyed sweethearts.

Grab a life-changing ham sandwich at this former horse butchershop.

The industrial architecture honors the laborers who brought the Exposition Universelle of 1900 to life.

This off-limits room in the National Library of France is home to a system of pneumatic tubes, once used to bring books to readers.

This scale model of our solar system hid in plain sight for years before a physics team sought out all the planets.

Trimmed trees grow alongside the graves like topiary tombstones.

This modern, multimedia museum takes visitors on an evolutionary journey back in time.

Colorful umbrella-covered trees in Singapore's Little India look straight out of Dr. Seuss.

A venerated grave atop an ancient royal hill, often attributed to the last king of Singapura.

The oldest Muslim cemetery in Singapore, with a strong royal connection.

This royal shrine and cemetery is hidden amidst modern public housing.

This fountain was once heralded as the largest in the world.

The last remaining Hakka cemetery in Singapore.

A disused quarry turned lake in the middle of a residential district.

Relax on your veranda and watch the light show.

Across this single-file rope bridge is what has been claimed to be the edge of continental Asia.

This statue once earned the distinction as one of the "Three Major Disappointments of the World."