The first tunnel to be dug beneath a river, repurposed as an art and museum space.

You can spot this teeny tiny stained-glass window from the Bonifacius bridge.

A tribute to the intrepid explorer and his crew who perished in terrible conditions on an ill-fated expedition to the Arctic.

A 1,215-foot tunnel transports pedestrians beneath the River Thames.

England's most famous front door has an accidental doppelganger.

A series of carved figures that scandalized British society.

Classic game cookery takes center stage at what's widely considered London's oldest restaurant.

These morbid carvings remind churchgoers of the inevitability of death.

This mummified mermaid corpse is an aquatic curio that was eventually revealed to be a fake.

Explore Hull's historic Old Town by following the sea creatures scattered throughout its charmingly cobbled streets.

This knockout museum lies in a sleepy corner of London.

The "shampooer of kings" who opened London's first curry cafe was a celebrity in the 19th century, but is all but forgotten now.

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

This collection of illusory paraphernalia has been culled from the history of London's premier magician's club.

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

A network of concealed passageways lies within a busy London Underground station.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

A kaleidoscopic warehouse-maze of handmade neon signs.

On the eve of a condemned prisoner's death, this bell rang 12 times outside their cell.

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

A faded reminder of what was once a common sight in London during the Blitz.

This haunting sculpture was created as a statement on the mechanized warfare of the First World War.

A friendly pub with a sordid past in cock fighting.

Murals of the wild parties once held on the frozen River Thames.