A student driver's nightmare.

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

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

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

A unique tribute to the millions of animals who served and died for the British military.

You'd never know the houses at 23-24 Leinster Gardens were fakes—until you see the train tracks on the other side.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

This once-controversial and slightly confusing statue of Achilles was built out of captured cannons.

This overlooked street light once served as a KGB dead letter box.

London's smallest police station is barely the size of a phone booth.

The medieval woodcut-style artwork chronicles life in medieval London.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The commemorative stone column conceals a secret laboratory.

Hear the quietest sound from across the dome.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

A 300-year-old tea shop that brought tea to the English people, not to mention the Queen herself.

This ancient Egyptian obelisk still bears the wounds of World War I.

England's most famous front door has an accidental doppelganger.

These ornate arches show how the course of the River Thames has changed.

The former Nazi concentration camp stands as a museum to remember this dark chapter in European history.

Romania's triumphal arch looks out over Bucharest.

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

An extensive network of secret tunnels was created for the Nazi project "Riese."

A 90-ton, gravity-defiant steam locomotive shoots for the skies in this bizarrely beautiful public artwork.