Heritage Open Day: Visit this small and intriguing building tucked in the corner of Moor Park, and discover what's inside that domed roof. Built for gazing at the sky, it's a star of Preston's scientific history. The observatory was built in Moor Park in 1927 to escape the chimney smoke that clouded the view of the skies from an earlier municipal observatory at Deepdale Enclosure. It houses a historic Cooke 8-inch refractor telescope, as well as displays of meteorites and astronomical history. The dome has been restored to working order - weather permitting, you can see it in operation.