Hundreds of boat-shaped headstones fill this graveyard as part of a centuries-old custom with mysterious origins.

300 years of pharmaceutical history on display.

This hidden art nouveau gem was designed by an architect in search of a national style.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

Sitting beneath an unremarkable residential building is a museum devoted to classic Pinball.

On the outskirts of the small village, an abandoned grassy field glitters thanks to the white stones of an ancient structure.

A mountain pass in Bulgaria's Balkan Mountains was the site of four historic battles.

A flamboyant five-story building in Bulgaria resembles a crawling snail.

A bridge destroyed three times: once as a ruse, then in an actual attack, and finally for the movies.

This brutalist monument is inscribed with 9921 names of Yugoslav partisans who perished during WWII.

Museum dedicated to the terror regimes of Hungary.

A series of caves under Castle Hill that once held the prisoner Vlad Tepes, better known as Count Dracula.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

Sealing couples' love since just after World War I.

The bizarre rocks of Đavolja Varoš are the result of natural erosion.

This spaceship-like Serbian monument reaches for the stars in celebration of the fallen fighters of fascism.

A medieval bridge stretches over a sulfur-rich river that leads to year-round natural hot springs.

This tiny watering hole claims to have the smallest bar counter in Europe.

This massive memorial commemorates those who died in the Manchester Arena bombing.

From scholastic to sepulchral - now under reconstruction.

One of the last Jazz Age "Wonder Theaters" in New York City.

The name of this famed hospital was once a byword for the horrors of medical and psychiatric care.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.