A replica of the lost rock cliff that was once significant in Singapore's maritime history.

Legend has it these two stones are petrified trolls.

At almost 1,000 years old, this is the oldest known door in all of Britain.

A geothermal paradise with bubbling mud pools and bright blue hot springs.

This historic streetcar system has been running since the 19th-century.

A abandoned hostel which was once home to Brunei's brightest students and present-day politicians.

Order your coffee crowned with salted whipped cream or blended with coconut and ice.

A must for film lovers in Madrid and home to the Spanish Film Library's projection space.

Hungarian Jews were ghettoized during the Second World War, but little remains of the original wall that closed the Jewish people off from the rest of the city.

An off-the-beaten-path boutique stuffed with an eclectic collection of upcycled goods.

This frog-themed restaurant was frequented by Picasso, Saint-Exupéry, and more.

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

This Parisian café sticks almost exclusively to an ethos of reuse.

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

Notorious artist squat renovated into legal studios.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

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

France's most famous cemetery, with some of its most curious tombs.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.