Semaphore saints, a golden dragon's head, and a stone carved with religious warnings all call this cathedral home.

This memorial to World War II's fallen airmen shows us the movements of the stars that once guided them.

This sculpture marks the spot where one of the greatest Roman rulers was proclaimed emperor.

A century-old tradition has culminated in a small but singular collection of feline effigies.

This popular square's history as the former site of a church is right beneath your feet.

Follow the original medieval paths that wind through this intriguing section of the city.

The little-known second castle that William the Conqueror built in York.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

This large open-air museum showcases the ordinary lives of the people of the Netherlands and pre-industrial crafts and practices.

The largest airborne operation in history was launched to capture this bridge.

This sprawling Belgian fort was once thought of as impenetrable but now it is simply an abandoned relic.

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

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

This bunker in northern France was built by Nazi German forces with the intention of launching up to 50 V2 rockets at London each day.

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

A monument to the thousands of Canadian soldiers who died capturing the French ridge during World War I.

An underground city of ancient quarry tunnels hid thousands of Allied soldiers in WWI.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.

You can spot this teeny tiny stained-glass window from the Bonifacius bridge.

This nugget of paradise earned its name for obvious reasons.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This demon atop the Notre-Dame de Paris looks utterly bored.

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

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.