This stone once marked the boundaries of Liverpool's medieval markets.

One of the largest ossuaries in Spain is packed from floor to ceiling with bones.

Possibly the world's smallest museum is home to one exhibit that sheds light on the capital city's dark criminal history.

Neon artworks light up this dark Edinburgh tunnel.

This former train tunnel is filled with lines from a poem crafted by Robert Louis Stevenson.

These steps offer a breathtaking view of one of Europe's most besieged fortresses.

Ship-sized kinetic sculptural fantasy.

There's an exclusive Beefeaters pub hidden in the Tower of London.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

A 4,500-year-old forest is slowly being revealed from beneath the sands of a Welsh beach.

This eclectic antique shop is home to the taxidermy remains of a celebrity lion named Simba.