including a marble run, a hall of mirrors and a giant guitar that kids can crawl inside and actually play. Beyond the exhibits, the museum also boasts a rooftop restaurant and a gift shop.

A museum in Letchworth ... Getty Images Karen designed the plastic marble run - like the one pictured - after watching his children play with a wooden version However, Mr Karen said one of ...

A private German donor gifted the ancient marble head to the museum in 1989. The previous whereabouts of the sculpture—including how it ended up in Germany—are uncertain.