The Art Deco artwork depicts gilded carriers of deadly illnesses.

Murals of the wild parties once held on the frozen River Thames.

This one has sailed five times as far as Sir Francis Drake's famous ship.

The commemorative stone column conceals a secret laboratory.

One of Antoni Gaudí’s earliest buildings, built between 1886 and 1890 for the industrialist Eusebi Güell.

A curious little museum dedicated to the furry feline in the cat haven that is Old Town Kotor.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

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

Oriental bazaar in the heart of Sarajevo.

This hilarious English intersection is an automotive whirlpool.

Ancient human remains unearthed around the iconic monument.

The oldest working mechanical clock in the world.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

This bridge later moonlighted as a local jail.

A giant white horse drawn on an English hillside may not have been intended to be a horse at all.

The plaques around this 19th-century structure recall some rather strange tales.

This section of the Kennet and Avon Canal has been designated the same level of heritage protection as Stonehenge.

This ancient fort overlooks the site of a disastrous retreat from the English Civil War.

The geoglyph once sported a glass bottle eye.

This massive chalk hill carving is one of England's most beloved giant horse geoglyphs.

All that remains of the fishing-vessel-turned-warship is its weathered hull.

The historic villages and towns of Suffolk are filled with wonky wooden beam houses painted an unusual shade of pink. Unknown to many though, this sweet shade has a bloody history.

Legend says the people of Wiltshire got their "Moonraker" nickname from this small pond.

It's a mystery why these remains were found with no traces of their bodies in sight.