A beachside monolith shaped by years of waves crashing against hard quartz.

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

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

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

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This Communist-era residential block is one of the longest residential building in Europe.

A statue honors the children who fought Nazis in Poland.

A tribute to the Polish insurgents who fought in the failed attempt to end their city's Nazi occupation.

The silly symbol for an underground protest group is now scattered around the city.

These massive moving sand dunes have swallowed an entire village and are still on the run.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

Explore nearly 400 years of English middle-class home life.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

Eighty million natural history specimens call this gargantuan museum home.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

Rebuilt remains of a temple to Roman god Mithras.

Famously misunderstood wonder of the ancient world

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.