A 400-year-old church covered floor to ceiling in ex-voto offerings from the faithful.

This oddly shaped boulder in Paris is rumored to be cursed.

The Argonaute submarine was the French navy's pride and joy in the 1950's.

This triumphal 16th-century arched gateway leads to the oldest street in Palermo.

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

The world's most active stratovolcano is almost always erupting.

A mysterious ancient elephant said to possess magic powers is now the symbol of a Sicilian city.

The heaviest gold coin ever minted.

A modern-day Lascaux cave underneath Paris.

The first green space constructed on an elevated viaduct.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

During the summer months, giant teddy bears take over Paris near Les Gobelins metro station.

A guitar mounted on a wall in Temple Bar honors the Irish musician.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

While only two of the ancient buildings at this site are actually churches this was one of the earliest Irish pilgrimage sites ever.

This statue celebrating everyday life in Dublin has a few unsavory nicknames.

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

These gigantic skeletons tower over visitors and provide insight into the creatures that once ruled over Ireland.

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

An enigmatic monument to the Irish revolutionary who plotted an uprising against British rule.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

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

Experience what life was like in Ireland during the Viking and medieval ages.