Outside of one of Britain's most renowned social clubs, a step installed specifically for the Duke.

This stone tower was built to protect Crete from incoming pirates.

1,500 Commonwealth servicemen of World War II are buried or commemorated in this cemetery.

In the midst of a living monument to Soviet social engineering, Polish Catholics built this church by hand.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

This mysterious chalk figure of a horse has been recreated and restored for more than a century.

This giant geoglyph of mysterious origins is now the site of neo-pagan rituals.

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

A medieval setting reimagined into a unique art alley.

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

This striking memorial is one of Estonia’s most controversial Soviet leftovers.

The oldest church in the Estonian capital is home to over 100 fantastical cemetery coats-of-arms.

Only a fragment of this 15th-century Dance of Death survives today.

The Guardian of Tallinn.

The oldest continuously operating pharmacy in Europe.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.

During the Soviet era, the spire of this longstanding church was used as a radio transmission tower.

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

An impressive monument to Poland's independence.

The largest treasure hoard in Europe is contained in a castle that was bombed out during World War II.

The “Coin Cabinet of Dresden” houses a collection of over 300,000 numismatic artifacts, one of the largest of its kind in Europe.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

A moving and macabre World War I-era painting by the great artist Otto Dix.

An ornate plague column – built to celebrate life – claimed the lives of numerous artisans during its construction.