A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

A monument to one of the most famous modernist Chinese poems and its poet.

This 1920s Dutch barge is now a floating bookstore.

A haunting painting meant to capture the calamity of World War I.

It is still illegal to "quarrel" at this unlikely urban oasis built on top of an electrical substation.

In the 18th century, the Earl of Buchan mapped the universe on this stone pillar.

After public executions took place at this location, attendants would also attend a local horse race.

These formal gardens were designed to be admired from the vantage point of the castle.

The main residence of the Erskine family and the hereditary keeper of the nearby royal Stirling Castle.

A letterbox installed specifically for the first editor of the Oxford English Dictionary.

What might be the oldest living tree in London has survived fires, bombings, and estate agents.

A museum that chronicles the interesting and often dark history of the London docklands, once one of the major trading ports of the world.

An ornate doorway leads to the former site of one of the city's oldest society of merchants.

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.

This pyramid is dedicated to all those who suffered martyrdom for civil and religious liberty in Scotland.

Hundreds of years ago, this lion-shaped door knocker could help a person accused of a crime find temporary safe haven in Durham Cathedral.

A reportedly haunted parking structure with alleged links to Jack The Ripper.

A re-purposed wooden sculpture, depicting one of Scotland's most beloved writer's amphibious creations.

A public art piece that barely gets recognized, but then that might be the point.

This ancient holy well is older than much of the city that surrounds it.

These unique weather vanes honor Scotland's most famous bard and decorate this walkway.

The remains of a 19th-century carving of what was to be a signal light on the Firth of Forth Estuary.

The burial site of a murdered bishop and his alleged killers.

A stone memorial marking the location where Scotland's first aeronautical flight landed.