A close look reveals that the Scottish monument is just slightly off-kilter.

The longest staircase lock in Britain.

A solemn memorial in a majestic setting that honors a 1692 tragedy.

The highest peak in the United Kingdom has a history of physics, specters, and a pilgrimage of strange objects.

Eliza and Mary Chulkhurst were the first famous conjoined twins in England, but it's not clear when they were born.

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

A jumble of treasures in a small space, this old-fashioned local museum is full of surprises.

Huge concrete structures designed as an early warning system for Britain to detect enemy aircraft.

One English town's celebratory landmark spurred more trouble than anticipated.

The oldest continual pilgrimage site in Britain was supposedly created by a gruesome beheading.

A Neolithic burial site built 1,000 years before Stonehenge.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

The longest and tallest aqueduct in Britain can actually be sailed across.

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

The sculpture is made of more than 100,000 knives collected to raise awareness about violence.

Long before mobile phones or GPS were available, these sentry boxes provided help for motorists in need.

Three bridges straddle a stream, one stacked upon the other.

Go back 50 years with a turn on one of the park's carefully restored vintage fairground rides.

A Neolithic burial tomb connected with a colorful array of legends.

Stroll through Welsh history in a village of reconstructed structures.

A strange and ancient landscape hides the dark, cavernous remains of a 5,000-year-old flint mine.

This 15th-century fortification was built to defend bunnies.

This giant geoglyph of mysterious origins is now the site of neo-pagan rituals.

Art Deco and “Wrenaissance” mash-up, this recently restored royal residence has been home to kings and comes with secret monkey passages included.