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

These wire animal sculptures commemorate the exotic inhabitants that once called the Tower of London home.

The bronze uniforms commemorate the vital role of women during World War II.

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

Its collection includes a broad array of social, geographic, graphic design, and political history.

These mysterious Viking chess pieces spent centuries hidden on a remote Scottish island.

The commemorative stone column conceals a secret laboratory.

A tiny replica of the iconic London landmark hides on the side of the steel structure.

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

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

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

A measuring mishap led to these artificial stone ladies losing their stomachs.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

This unique bridge curls up like a caterpillar to let boats pass and then unfurls again to span a small canal.

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

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

The rose garden in Regent's Park where Pongo and Perdita met for the first time in Disney's "101 Dalmatians."

The majority of the museum's large collection is held in a storage space open to the public a few times a year.

Never actually a tree at all, this spot was the site of London's public hangings for nearly 600 years.

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

A museum wholly devoted to juvenescence.

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

Dictionary Johnson’s favorite feline.