Dedicated to the European Sinti and Roma peoples murdered during the Holocaust.

Tiny memorials honor individual victims of the Holocaust.

Cold war icon and onetime "hole" in the iron curtain.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The final resting place of soldiers' loyal canine companions.

The "Prussian Versailles" that is as glorious today as when it was built.

A memorial in the Tiergarten is a reminder of the suffering inflicted on homosexuals by the Nazi regime.

Metro station with a claim to rock n' roll fame.

A monument to the man who almost killed Hitler.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

A slice of central Asia in the middle of Berlin.

This World War II relic let Allied pilots know they were entering neutral airspace.

Mortarless walls that stretch for miles are a lovely solution for creating grazing land in the harsh terrain of the Aran Islands.

This natural sea arch highlights Ireland's rugged coastal beauty.

The oldest pub in Ireland may also be the oldest surviving bar in the entire world.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

A hugely vast Irish landscape of barren rock that stretches for miles.

A six-ton wedding present for the King of the Scots.

The world’s first museum dedicated to the history of childhood opened in Edinburgh in 1955.

Overlooked by many, the two famous Scottish warriors guard the main gate of Edinburgh Castle.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

A typographic tribute to the many comedic greats who make Great Britain laugh.

One of the oldest amusement rides in existence was a huge disappointment to its creator.

The tower was originally used as a chimney for the waste incinerator of St. John's Precinct and Market.