A set of medieval stained-glass windows tell the gruesome story of a Viking siege.

This skewed English house has looked like it's going to fall over for centuries.

Inspired by Thomas Stothard's painting of the "Journey to Canterbury," albeit with Canterbury natives.

A defensive structure built during the Hundred Years War has remained useful in one way or another for nearly 700 years.

The house where the writer spent his formative years.

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 beautiful site is where the first transatlantic telegraph was sent from.

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

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

All that remains of the fishing-vessel-turned-warship is its weathered hull.

A open air theatre built on a cliff by an eccentric British woman.

A island reachable by a causeway at low tide is possibly one of the earliest Western European locations to be identified in text.

This temple was constructed entirely by Roman soldiers.

Also known as "Robin Hood's tree," this tree became a famed location along Hadrian's Wall before it was cut down in an act of vandalism.

More than 500 years after his death, a medieval ruler's remains were found buried under a parking lot.

This once-grandiose behemoth of a monument from the socialist era now sits quiet and closed up.

Stare out over the lagoon and beyond from this 10th-century campanile on the island where the city of Venice began.

The small peaceful island off the Venice tourist circuit is where the city began more than 1,500 years ago.

Two stone columns flank the grand Venice square, but there were supposed to be three.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

This abandoned island off the Venetian coast has been a radical monastery, a political prison, and a secret Nazi base.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

The iconic boulevard is the perfect place to catch sight of a bicycling skeleton, a levitating Satan, or a chef with his head stuck in a pizza.