Cultural Organization - Educational - Museum
Website: https://www.mariamitchell.org/vestal-street-observatory
3 Vestal Street, Nantucket, MA 02554
Built in 1908, the original dome housed a 7.5-inch telescope with a lens from Thomas Cooke and Sons of York, England and a cast-iron pier, mount, and clockwork by Alvan Clark & Sons in Cambridge, MA.