A great example of the enduring medieval decorative construction technique known as flushwork.

The oldest of its kind in the country, this tree sits where formerly enslaved people are said to have founded the city of Freetown.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

A monument to the thrice mayor of London who according to lore made his fortune by selling his rat-chasing cat.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

This small museum in a former church crypt contains artifacts of the Elephant Man, Jack the Ripper and Florence Nightingale.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

A forgotten underground railway once whooshed trams beneath London.

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.

This site was once home to Henry VIII and Elizabeth I.

One of London's lost rivers runs through a pipe over the tracks of this subway station.

A masterpiece of Art Deco architecture hidden in plain sight in West London.

London's Victorian Tower of Babel.

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

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

Chelsea's soldiers were given strict orders when crossing this historic bridge.

This iconic high-rise residential block was one of the last to be built in the Brutalist style.

Originally meant to hold a statue of King William IV, this support sat empty for years. Today, it hosts a rotating cast of public artwork.

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

Soon after its unveiling, this giant inverted globe sparked controversy and was vandalized.

This unassuming building produced some of the world's most famous bells.

The world's longest continuously running show has played at this small West End theater since 1974.

An ornate and disused early 20th-century building has been given new life as a fully operational structure, complete with offices, oyster bar, and a furniture retailer.