Needles Highway, part of South Dakota’s Peter Norbeck Scenic Byway in the Black Hills, is a 14-mile stretch of Highway 87 renowned for its dramatic granite spires and narrow tunnels. Highlights include the Needles Eye, a tight passage carved through rock, and views of jagged peaks like Cathedral Spires. Winding through Custer State Park, this engineering marvel offers stunning vistas, wildlife sightings, and access to Sylvan Lake. Built in the 1920s, it’s a thrilling drive best enjoyed in fair weather due to its sharp curves and limited clearan.