Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

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

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

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

These rustic holiday homes are made from discarded fishing boat hulls.

A statue paying homage to a world-record-setting aviator who disappeared under mysterious circumstances.

Overlooking the seaside town of Margate stands a tribute to an artist's lover.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

Over several decades, one of London’s most iconic city gates was dismantled, moved out of the city, and then moved back.

London’s first road overpass is so old that it was originally built for horse-drawn carriages.

At the center of London’s oldest roundabout stands an obelisk that was erected in 1771, but spent several decades elsewhere.

Once designed as the entrance to Buckingham Palace, this structure was later relocated and stands as a victory arch.

This is London's smallest listed building.

The niches over the western entrance of Westminster Abbey honor individuals from the 20th century who gave their lives for their Christian beliefs.

This long-hidden space above Westminster Abbey now displays the battle gear of the legendary King Henry V.

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

This statue includes the molehill that toppled a king.

Giant, friendly pelicans in Central London, the most unlikely of places.

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

An unusual ode to the late Irish playwright, complete with a squiggly bust and coffin-shaped bench.

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

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

The purported midpoint in London from which all distances are measured has a tragic love story at its core