One of the oldest churches in Romania is believed to have been built on the site of a pagan temple.

This massive underground salt mine now holds a sci-fi theme park in its depths.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

A spooky spot along the road where things mysteriously seem to move uphill by themselves.

A countryside Romanian cemetery filled with colorful crosses bearing lyrical, ironic, or satirical rhymes.

Some call this eerie forest of crooked trees the "Bermuda Triangle of Romania."

Belfast's namesake river still winds below the city center, hidden from sight.

This massive monument has been telling the time for 150 years—at a slight angle.

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

A medieval church built up to defend its village.

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

Dublin's most modern, visually spectacular bridge is modeled after Ireland's national emblem.

A stunning Victorian abbey and walled garden on a lakefront.

An Irish town has built a statue to a silent film actor simply thanks to the holidays he once spent there.

A particularly disconcerting tribute to Irish martyrs.

Ireland's most remarkable collection of these curious cone-shaped houses is worth the buzz.

This courtly monument celebrates an influential comedian who turned taking the piss out of the powers-that-be into an art.

A hugely vast Irish landscape of barren rock that stretches for miles.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

This single room has survived the centuries with almost no deterioration.

The oldest inn in Kilkenny was established by the first convicted witch in Ireland.

The Natural History Museum that time forgot.