This 11th century tower is said to be the oldest building in Oxford.

This Norman castle was once the site of a Victorian-era prison, and now exists as a luxury hotel.

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

This life-size monument honors the legacy of a famous literary feline.

England's most famous front door has an accidental doppelganger.

According to the Guanches, the aboriginal people of the Canary Islands, the king of evil lives inside this volcano.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

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

This centuries-old wooden wonder was built in less than a year and is one of Europe's largest timber-framed churches.

The largest of London's subterranean rivers and once a mad, bad center of London life.

This ancient Egyptian obelisk still bears the wounds of World War I.

The broken skateboards that became a poignant memorial to a murdered skater.

A former ironworks that was the first UNESCO industrial site.

The birthplace of Karl Marx is now a museum dedicated to the communist revolutionary's life and work.

The last bastion of Roman presence north of the Alps looms over a German town.

In this brilliant blue spring in Germany, legend has it that a sad mermaid learned to finally laugh.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

This museum tells the story of lake dwellers from 4000 BC to 850 BC, replete with stilt houses and goats.

This is not only one of the oldest collections in Europe, but also possibly the most beautiful.

The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.

A 1970s resort city now stands abandoned, caught in the middle of a divided island.

This unassuming oasis elevated just above the busy streets of Jerusalem offers one of the best views of the Old City.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.