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

One of downtown Berlin's last reminders of its Communist past.

A fascinating insight into daily life in the Eastern Bloc.

A museum dedicated to the history of a terrifying secret police is now held in their former headquarters.

Museum preserving torture methods from the past.

Barça football fans might see the insignia hidden in a church window as a divine sign.

An early 20th-century bullring converted into a modern shopping center.

19th century tunnels burrowed under Liverpool.

A statue honoring Frank Sidebottom, a beloved cartoon figure from Timperley.

The city of Manchester quietly unveiled this tribute to a 19th-century massacre.

Be on the lookout for the symbolic insect all over the city.

A giant wooden soda bottle pays homage to a distinctly British drink on the very spot where it was invented.

Manchester salvaged this sculpture of the adopted Mancunian when it was no longer wanted in Ukraine.

The star-studded street honors the city's most notable Brummies.

An unsanctioned shrine that sprung up outside the late singer's home is causing a stir in London's Highgate neighborhood.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

Two plaques commemorate the site of Shakespeare's first theatre.

This London plaque marks the spot where David Bowie's famous alien made his debut.

Experience what life was like in Ireland during the Viking and medieval ages.

The somber sculptures commemorating Irish Famine on the river Liffey in Dublin.

This tiny museum's sizable collection is jammed into a former underground public toilet.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

The place to be if you love vintage Swedish cars.