This 19th-century prison once held Irish revolutionary Constance Markievicz, writer Frank O’Connor, and a nine-year-old pickpocket.

This ancient Irish tower could easily have stood in for Rapunzel's prison.

Designed to commemorate the king's coronation.

A particularly disconcerting tribute to Irish martyrs.

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

This red light district plaza memorializes the Fab Four and their historic connection to the area.

Hidden in plain sight on a gable between two towers on the roof of shipping firm F. Laeisz' headquarter in Hamburg sits an unexpected bronze sculpture.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

Hamburgers are intensely proud of their tunnel beneath the river.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

This modest plaza in Moneygall, Ireland has cashed in on its distant connection to the U.S. president.

This pub built its reputation pouring post-shift pints for employees of the cemetery with which it shares a wall.

The house where the writer spent his formative years.

An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

Finland's northernmost zoo is home to the country's only polar bears.

Swedish skyscraper with a 90° twist.

This chimerical bridge/tunnel appears to dead end right into the sea.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

A state-of-the-art medical facility dedicated to treating beloved birds of prey.

This seemingly random 30-foot statue of an oryx in Qatar's capital was a mascot for the 2006 Asian Games.

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.

This fountain pays homage to Qatar's history of pearling, the primary industry before oil.

Qatar's oldest market can trace its origins back more than a century.

The building is a gigantic piece of art inspired by the shape of a desert rose.