A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

Colorful murals by Jean Cocteau hide within this peaceful London sanctuary.

This lush area was the site of extensive enemy bombing during WWII.

Preserved behind glass, the ruins of a medieval building used to store human remains.

The next-door homes of two very different musicians, George Frideric Handel and Jimi Hendrix.

Outside of one of Britain's most renowned social clubs, a step installed specifically for the Duke.

This sculpture of a pylon is upside down and askew, as if its main purpose is to confuse passersby.

These remnants of Old London Bridge possess unique acoustics that allow for whispered conversations to carry from one side to the other.

An underground city of salt.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

Down this Cracovian street resides a plaque with a stark message about the city's air pollution.

Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

While the U.S. and Soviet Union were engaged in a space race, Poland built a UFO on the ground.

The ceiling of this shopping arcade is adorned with six trompe-l’œil artworks, including a grim funeral scene.

A collection of windows created by two of the foremost leaders in the British Arts and Crafts Movement.

A gigantic mechanical bull rages over unsuspecting passengers at Birmingham’s central station.

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

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

A bench and a bridge pay tribute to Birmingham's favorite heavy metal band.

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

This endearingly discomfited urinating statue commemorates the sneaky pees had by us all.

Dedicated to the outnumbered Finnish forces who pushed back Soviet forces during the conflict.

A subterranean house of worship carved right out of the bedrock.

An alien church provides much needed silence in the midst of a Finland shopping center.