Henry VIII's forgotten castle was built by the gunpowder-obsessed king to be defended solely by cannons.

The famous polar explorer stands outside the Royal Geographical Society's headquarters.

A clock designed to run with perfect accuracy for 10,000 years.

Charles Babbage's proto-computer, painstakingly brought to life.

This museum inside a museum tells the story of London's timepieces.

One of London's lost rivers runs through a pipe over the tracks of this subway station.

Harry Potter once visited this massive limestone cliff, which was carved by an ancient glacial river.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

Also known as Rye Castle, this 13th-century fortification later became a prison and held one of Rye's most famous criminals.

This centuries-old hotel hides a network of secret cellars and passages once used by smugglers.

Two gilded cherubs perched on a church bell tower have been reminding visitors of the finitude of life since 1760.

An ancient water supply dating back almost 500 years can still be found standing in East Sussex.

A grand Wetherspoon pub set in a former opera house dating back to 1902.

Arthur, Merlin, and Guinevere are among the largest and oldest satellite dishes on the planet.

An underground city of ancient quarry tunnels hid thousands of Allied soldiers in WWI.

One of the most notorious leaders of the French Revolution once lived here.

A monument to the thousands of Canadian soldiers who died capturing the French ridge during World War I.

A group of committed locals restored this centuries-old windmill to its original condition.

England's oldest surviving hedge maze has been confusing visitors for over 300 years.

Tucked among the sand dunes overlooking a Welsh beach, a real-life tribute to a fictional elf.

Ramsgate’s Royal Harbour has the unique status of being the only Royal Harbour in the United Kingdom.

This longship was a gift to commemorate the 1500th anniversary of the Anglo-Saxons arrival in England.

This sculpture marks the spot where one of the greatest Roman rulers was proclaimed emperor.

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