Statues of two of Srem's most well-known animals.

A Serbian monument to plums.

The ruins of a military-industrial complex now host concerts and more.

Operating continuously since 1903, this "milestone" facility transformed the regional economy.

This historical village takes you back to the 19th century.

Serbia's master of striking memorials erected a forgotten, hidden gem in the hills outside a tiny village.

Destroyed Serbian army headquarters sits half crumbled in a largely revitalized Belgrade.

Picturesque ruins once held off mighty armies.

The decaying ruins of Wales' first asylum for the mentally ill.

This abandoned asylum in Wales might look haunted, but it's still beautiful.

The smallest pub in Britain was once a cabinet of curiosities and it still has the dead cat to prove it.

Hidden in a grotto 26 feet below Nottingham's oldest hotel, this stylish subterranean drinking den is notoriously hard to find.

The final resting place to 300 Victorian-era pets hides inside the city park.

An incarceration museum on the spot of possibly the oldest prison in England.

The site of London's first coffee house has been serving refreshments of one kind or another for 360 years.

A historic house left in "dramatic still life."

A makeshift shrine to the late rock star is still kept up on the nondescript façade outside 1 Logan Place.

The world's first underground farm is in a World War II bomb shelter beneath the streets of London.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

The curios of pharmacist and collector Henry Wellcome.

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