The once-a-day siren is a reminder of the days before time was standardized.

This magnificent mural was created with over 30,000 colored bricks.

This police call box harkens back to an era of pre-radio communications, and has a rather unique feature.

A tribute to the women who quietly kept the local steelworks alive during both world wars.

Amidst towering office buildings, a local pub lives inside Sheffield’s oldest surviving domestic building.

The whimsical steel spider lurking in the shadows of this suspension bridge shows that engineers can have a sense of humor.

Presented to the city in 1910 for public use, these brass markers show varying lengths.

The former home of a railway legend and the site of a gigantic labyrinth.

One of the town's most famous residents, holding one of his most famous creations.

This enormous spiral sculpture looks strangely out of place on the edge of a housing development.

The whimsical twist of this spire was either caused by the Devil, an unexpected virgin, or lead.

Pompeii's less famous neighbor is still revealing her secrets.

Before it was buried by volcanic ash, this fast-food restaurant fed the hungry hordes of ancient Rome.

The walls and streets of the ancient city are peppered with penises.

Erotic art covers the walls of the largest ancient pleasure palace.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

This beautifully situated lakeside Roman settlement was likely built during the reign of the Emperor Hadrian.

Home to one of the most popular teams in Scottish football history.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

This grisly exhibit houses skeletons and weapons from a devastating 14th-century clash.

The world's largest model of our planetary system.

Semaphore saints, a golden dragon's head, and a stone carved with religious warnings all call this cathedral home.

A rare example of the RAF’s flying spy taxi.

Have a seat with the father of modern computing at this Manchester monument.