This Transylvanian church has changed its denomination four times.

The possible imprisonment of Vlad the Impaler here earned the medieval castle its nickname, "Dracula's Castle."

The European towns of Brașov and Râșnov each have proud signs reminiscent of the Hollywood sign.

This snug medieval lane is one of the narrowest streets in the world.

A fire once nearly devoured this gorgeous 14th-century Gothic cathedral.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

A 200-year-old collection of oddities and medical paraphernalia.

"Respectful to the dead, safe and sanitary to the living, dedicated to the Genius of Memory..."

This Scottish museum is the only one in the world to focus not on one religion but all of them.

The ship built to ferry passengers and goods to the doomed Titanic is now the last remaining White Star Line vessel.

This short bridge is the only thing connecting a tiny Irish island to the mainland.

Northern Ireland's Brobdingnagian stepping stones.

The atmospheric road was never meant to be so creepy.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

The ancient tomb acts as a calendar that keeps perfect time.

An ancient neolithic tomb that only sees the sun twice a year.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

One of Ireland's most infamous prisons for rebels including men, women and children.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.