Mounds, rune stones, and a 1,000-year-old church, left behind by Denmark's first two kings.

This unique architectural wonder is home to luxury apartments.

Hidden in plain sight, the origin of these embedded skulls remains the stuff of legend.

Recently restored menagerie of Victorian-era beasts.

Stroll through Welsh history in a village of reconstructed structures.

This castle tower in Wales leans at a steeper angle than the Leaning Tower of Pisa.

A wildlife paradise, this island is one of the world’s most important habitats for burrow nesting seabirds.

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

A spiral staircase connects the limestone cave with Pembroke Castle, birthplace of King Henry VII.

In the center of Wrocław's old meat market stands a somber tribute to the city's livestock.

A Faraday Cage protects cars from a nearby high-power transmitter.

When this Iron Age bog body was discovered in 1835, it was thought that she had died recently.

A former ironworks that was the first UNESCO industrial site.