An agreement meant to honor the Duke of Buckingham led to this unusually-named passageway near Charing Cross.

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

A forgotten underground railway once whooshed trams beneath London.

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

Public access to clean drinking water was an instant hit among the masses.

London's only public statue of the much-married monarch adorns the gate to St Bartholomew’s Hospital.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

One of London’s rare Tudor-era buildings is a fate-defying gatehouse for a church.

A quiet memorial to those who died saving others in the heart of the City of London.

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

What might be the oldest living tree in London has survived fires, bombings, and estate agents.

This statue of one of the engineers who created the London Underground hides a ventilation shaft for the tube lines that run under the street.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the first ‘Harry Potter’ film.

This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.

Only a few pieces remain of the structure that carried people and goods across the Thames for some 600 years.

This legendary stone is of unknown origin, and throughout history has been a literal touchstone for British leaders.

The 2,000-year-old beam is tucked within the pedestrian entrance to the old London Bridge.

A hidden treasure in London with a rich medieval history, and the resting place of many luminaries.

A memorial for public executions that dates back to the 14th century.

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

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

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

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

An artistic interpretation of the history of a Scottish park, combining poetry with anthropomorphic animals.