This recently restored crypt was once plagued by liquefying coffins and exploding caskets.

This 11th-century castle sits so low you can't see it behind the surrounding buildings.

People have been placing babies on these lilies for photoshoots since the Victorian era.

An ancient Egyptian temple sits within a modern European museum.

Devious political maneuvering and four ancient, working telescopes are central to the world's second-oldest observatory.

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

A former plague hospital turned medical museum.

It's forbidden to dig within this ancient Roman fort hidden beneath a playground.