The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

Museum dedicated to the UK's first charity for abandoned children, with keepsakes of the mothers who left them behind.

"We gonna rock down to Electric Avenue, and then we'll take it higher..."

The library houses an incredible collection of some of the world's most impressive books and manuscripts.

Black cat statues guard this temple-like Egyptian revival factory.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

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

William Blake claimed to have painted this gothic masterpiece after encountering this nightmarish being in a vision.

Where condemned pirates met their grisly end at the gallows on the River Thames.

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

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

A relic of Victorian grandeur hides beneath a busy South London road.

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

A labyrinth hides in plain sight at each of the city's 270 Tube stations.

A friendly pub with a sordid past in cock fighting.

A Roman spa buried deep beneath the City of London.

This elaborate Byzantine-style building was designed for a not-so-pretty purpose.

A glorious pub known for a spiteful printing feud and its famous typeface lost—then found—at the bottom of the Thames.

Pop culture has helped to keep this iconic British building from being destroyed.

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

An artistic tribute to the famous singer, just around the corner from where he was born.

Thanks to modern navigational tools we now know that the true prime meridian runs through a park next door.

Scattered throughout London are ancient remnants of the city's former bounding wall.

An alleyway plaque is all that remains of the independent Texas' envoy that forgot to pay their rent for over a century.