Hidden deep within castle walls, the oubliette was a prison unlike any other – designed not just to confine, but to erase. In this chilling look at medieval punishment, we uncover the grim ...

A page in a rare medieval tome named the Liesborn Gospel Book bears a mysterious prayer wheel, but how it was used remains a mystery. It has concentric circles bearing quotations from the Lord's ...

Data viz isn’t just a modern-day craze. Designer Manuel Lima, author of The Book of Trees, discusses the origins of the tree diagram.

An oubliette is a dungeon from which there is no escape. They were built into medieval European castles and consisted of an underground pit with a small entrance hole carved into the ceiling. The ...