2300-year-old Roman road connecting the empire.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

Stone memorial that's said to predict the death of the pope and the site of the Cadaver Synod.

The yawning maw of this pagan visage is said to bite off the hands of liars.

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

The comedy and tragedy of Oscar Wilde is preserved in a Dublin park, captured in a sculpture of colorful stone.

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

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.

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

As can be expected from a centuries old church built in a canal city, the undercroft of this house of worship is beautifully flooded.

An extensive collection of reliquaries containing the bones of saints housed in the largest Catholic church in Venice.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

When this funny little building went up in the 19th century, most people thought it would simply fall over.

Abandoned railway line circling the city of Paris.

France's most famous cemetery, with some of its most curious tombs.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

The first green space constructed on an elevated viaduct.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This Industrial Age architectural and engineering gem helps visitors and residents alike traverse Lisbon, “The City of Seven Hills.”

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.