Built as a training camp, this site became a detainment center for prisoners of war and German civilians during World War I.

This castle resides in a valley known for immense bloodshed during the Middle Ages.

Though this large circular site is now named for the legendary king, its history dates back to the Neolithic era.

An impressive Neolithic henge with banks nearly 10 feet high.

A memorial overlooking a busy roadway is linked with the story of a 17th-century noblewoman’s legal battle for her inheritance.

At 1,732 feet above sea level, this spectacularly isolated yet surprisingly bustling bar is the highest pub in Britain.

An abandoned Yorkshire castle that is hidden in plain sight.

The church and nearby castle are all that remains of a medieval village, mysteriously abandoned.

These 20-foot jaw bones honor a time when the leviathan bones were a sign that whalers survived the hunt.

These planks were originally installed to hold the dead.

This tiny traditional smokehouse is the only one left in this historic fishing port.

The gloomy ruins that inspired Bram Stoker to bring Dracula to life.

At the height of alum production at this factory, human urine was a valued commodity.

Harry Potter’s Hogsmeade Station is also a charming blast from the past situated in North Yorkshire.

Legend says that Wade the Giant scooped up a handful of earth to throw at his wife, leaving behind this round valley.

Remarkable medieval wall paintings decorate this 12th-century, dog-friendly church.

WWII artifacts, including the building itself.

The phone booths in this English town have distinctly milky hues.

This two-towered gateway is all that remains of the unluckiest pier in the world.

A tilted half-timbered house from 1672 is built into a salvaged segment of a medieval wall.

An underground city of salt.

This man-made mound monument was built out of soil from all across the Polish empire.

Crosses of all shapes, sizes and colors litter the mountain, the site of a huge yearly Orthodox pilgrimage.

Step into the past of this Andalusian town through exhibits with traditional tools, local crafts, and cultural artifacts.