This obscene artwork on the side of a newspaper office pokes fun at a rival paper's former editor-in-chief.

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

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

Blitzkrieg bop your way through Berlin's Ramones Museum.

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

A complicated contraption for telling time by the moon.

Anonymously sculpted and donated, these sculptures made from poetry books and pages are sprinkled around the city.

This charming old building's loose connection with the Scottish Reformer is what saved it from demolition after it split apart.

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

This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

This early version of the guillotine was used to execute the man responsible for its construction.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.

Remnants of the 16th-century defensive wall still stand unassumingly within Edinburgh.

Protecting the dead from opportunistic body snatchers.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

Created as a punny statement about genetic engineering this monstrous hybrid statue has become a beloved icon.

Great Britain's only hat-making museum.

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

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Numberless clock creates a meal of time for the dreaded, insectile Chronophage.

The Cambridge pub where Francis Crick announced that he and James Watson had discovered the DNA double-helix.

The newsstand that never closes its doors—well, almost never.

A restored 1920s cascade stairway provides one of the best views of Oakland's Lake Merritt.