Black cat statues guard this temple-like Egyptian revival factory.

The largest public library in the United Kingdom was designed to reflect the industrial and artistic history of the city where it stands.

These docile dragons are ideal inhabitants for the conservatory greenhouses.

The medieval woodcut-style artwork chronicles life in medieval London.

A haunting monument dedicated to the Royal Naval Air Service and the Fleet Air Arm.

A memorial for public executions that dates back to the 14th century.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

A Roman spa buried deep beneath the City of London.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A mysterious pair of mice eating a piece of cheese is London's smallest public sculpture.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.

A museum wholly devoted to juvenescence.

This 17th-century pub once had a hole in its wall so the neighboring blacksmith could easily access beer.

When this 18th-century observatory's meridian was moved, it set Sweden's time back by 0.04 seconds.

The library's graceful rotunda is like a bibliophile's temple.

The apartment where Pippi Longstocking came to life.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Finally reunited, the three effigies now stand in a museum courtyard.

The scars of a remarkably organized public protest to save 13 elm trees are still visible in this Stockholm park.

This statue and park honor the Swedish chemist Jacob Berzelius, one of the founders of modern chemistry.

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

The 19th-century home of Count and Countess von Hallwyl is now a museum.

A heated statue pays tribute to one of Sweden's great actresses.

Stockholm's tiniest statue is of a small boy looking at the Moon.