Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

The home-turned-museum of Barış Manço, the mustachioed Turkish Elvis for children.

A gorgeous, Gaudí-esque stairway constructed in the city of Istanbul by a prominent Jewish family.

Ancient serpentine sacrifice holder that has stood the test of time.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A fountain standing as a testament to a doomed alliance.

This architecturally eclectic early-20th century mosque was built as a place of worship for the Islamic followers of a Jewish messiah.

A little-known park with unusual, half-ruined structures and a mystical energy.

A plaque bearing the names of those who dedicated themselves to protecting Budapest's Jewish population during World War II.

The metal leaves on this tree are engraved with the names of Holocaust victims.

How did an Australian statue of the Bard of Avon end up in the Hungarian capital?

A diminutive statue that was inspired by the sculptor's own daughter.

A random tree outside a Budapest hotel has become a DIY shrine to the late singer.

Also known as Uncle Karl, the beloved bronze copper keeps a watchful eye on St. Stephen’s Basilica while people rub his lucky belly.

Once the home of a hermetic monk, this cave now houses a small church.

Time stands still at this serene burial ground in the center of Budapest.

A stunning Art Nouveau cinema in the heart of Budapest.

The holes in this wall provide a glimpse into Jewish life in Budapest, both past and present.

A Trabant car, a kangaroo statue, and a plethora of plants take over this abandoned-factory-turned-bar.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

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

After immigrating to Paris in the 1970s, two brothers from Laos built a grocery store empire.

The remaining relics of the patroness of Paris lie in a chapel under a striking double spiral staircase.

The video game-themed street art first popped up in the French city.