Caligula's colossal pleasure ships, discovered by Mussolini only to be lost in flames.

The fences outside some of South London's estates are made from recycled World War II stretchers.

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

This innovative steam machine was no doubt the most famous of the pioneer locomotives.

A traditional American farmhouse plopped in the middle of a Piccadilly courtyard.

This marine reptile was discovered by one of the 19th century's greatest fossil hunters.

A relic from one of London's worst 19th-century slums.

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

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

Historic church where a number of Shakespeare's actors are buried.

This intricately carved and hilariously huge bed was such a famous symbol both Shakespeare and Byron used it in their writing.

The majority of the museum's large collection is held in a storage space open to the public a few times a year.

The last four extravagant street signs of London's historic banking street.

An eccentric 18th century naval officer built a ship's quarterdeck on his roof, the inspiration for Mary Poppins's "Admiral Boom."

A museum wholly devoted to juvenescence.

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

This one has sailed five times as far as Sir Francis Drake's famous ship.

The remains of the great moral philosopher reside in a university in London.

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

This luxury shopping lane has been protected by its own tiny police force for over a century.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

Remnants of cells from the most notorious London prison may lie in the basement of a rare Victorian Gin Palace.

An small and easily overlooked archaeology museum chock full of Egyptian artifacts.

Mary Kelly was last seen here before she was murdered by Jack the Ripper.