An architectural oddity hides in plain sight on this iconic London bridge.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.

Ship-sized kinetic sculptural fantasy.

A little slice of Japan and its aesthetics in London's Holland Park.

An ancient hotspot for spotting schools of fish.

Sometimes an island, sometimes a rocky outcropping connected to the world by a tiny suspension bridge.

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

Named after a lodging site that existed nearby, a bridge has existed at this location since 1455.

The bridge is a secret gallery of discarded gum that has been transformed into miniature masterpieces.

This centuries-old hotel hides a network of secret cellars and passages once used by smugglers.

Local legend says Isaac Newton built this footbridge without any screws, bolts, or nails.

This sculpture marks the spot where one of the greatest Roman rulers was proclaimed emperor.

One of the shortest streets in York has an especially odd name.

This network of narrow, medieval passages has the most delightful name.

Follow the original medieval paths that wind through this intriguing section of the city.

A 16th-century footpath said to be haunted by a young girl that died trapped within its misshapen old house.

A museum wholly devoted to juvenescence.

A misunderstanding gave this 18th-century racehorse a most amusing name.

Copenhagen's celebrated theme park and gardens.

Site of the first radio and telephone broadcasting companies in Copenhagen.

Bored potato-guarding Nazis etched their thoughts onto a brick storage building in Copenhagen's Meatpacking District.

An "evil painter" included pointed symbols in this artwork to poke fun at members of the Danish Parliament.

Pre-Nazi swastikas adorn the sculpted pachyderms flanking this brewhouse portal.

The art museum is decorated with creatively remodeled pre-Nazi swastikas.