This former Nazi castle was built as a school to train what would have been the future of the Third Reich.

A poignant mural honors the heroic teenage non-conformists who took on the Nazis and paid the ultimate price.

The largest bell in the world has been swinging high above a Cologne cathedral for almost a century.

An elegant chandelier hangs over this ancient sewer chamber, now open for concerts and public tours.

A church filled with the bones of hundreds of virgins martyrs—or so they say.

This World War II-era bunker hides between medieval chapels in Nijmegen's city center.

This vast World War II defense line was the site of a fierce battle.

This magenta statue commemorates the legendary marriage between a mermaid and the city's founder.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

A striking memorial recalls thousands of Bolognese men and women killed fighting fascists in World War II.

This former Nazi labor camp is now a poignant memorial, complete with giant Soviet-style monuments.

Dedicated to the American general whose reply to a German demand for surrender was simply "Nuts!"

This museum is housed in an unassuming building that witnessed one of the most daring feats of satire in modern history.

A Cold War command center is hidden under an idyllic countryside.

This statue dedicated to the story of a Flemish boy and his dog was relatively obscure in Belgium, but a cult sensation in Japan.

In the shadow of a former battleground, the resting place for nearly 2,000 soldiers who died in World War I.

This memorial museum chronicles the apocalyptic destruction of the First World War.

A moving memorial to the fallen and missing from WWI trenches.

The site where one of the most famous poems of World War I was composed is preserved to honor the legacy of the work.

When you're a great Russian Tsar, even your vomit gets a statue.

The Belgian royal family's private depot now stands abandoned and forgotten alongside the tracks.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

In an area where the remnants of WWI are discovered on a regular basis this preserved frontline trench may be the most amazing.

Cozy basement bar sports an inventory of over 2,000 beers.