A mysterious suspended hand greets unsuspecting visitors at the Tower of London.

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

The Great Fire of London and the regulation of one-way streets both started in this alley.

The commemorative stone column conceals a secret laboratory.

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

Banksy gives themself artistic license with this piece of London street art.

Lovers proclaim their unbreakable bond by leaving their names on locks fastened onto the Shoreditch fence in East London.

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

This coffee shop lies hidden beneath a historic church.

A statue of the original Pearly King is hidden in a church's crypt.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

A charming 17th-century alley is lined with secondhand bookstores and antiquarian shops.

Installed at a chaotic intersection, this gave London traffic cops a place to hang their heavy woolen coats.

On a wall in linear London, a plaque hangs at the high water mark of one of the worst floods in fictional Kcymaerxthaereal times.

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

The Tudor-style cottage in the middle of the square is not quite what it seems.

An oddity of a bygone era that stills functions today.

Order a salt beef-loaded beigel at any hour of the day or night at this East End institution.

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

This intriguing Bronze Age artifact spent centuries hidden within a Welsh faerie hill.

A naturally mummified 2,000-year-old man.

A gruesome and mysterious ancient sculpture of a pagan deity from the Roman occupation of Celtic Britain.

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

This magnificently macabre shield shows the power of chivalrous love in medieval times.