Blue Line Park is a coastal tourist facility in Haeundae that runs from Mipo to Cheongsapo and Songjeong, operating a beach train and sky capsules. It follows a 4.8km section of the former Donghae Nambu Line railway converted for eco-friendly use, with views of the sea along the route. Online reservations still can mean a 50-minute wait in the boarding line, and the beach train runs for about 30 minutes. The sky capsule does not cover the entire route but only part of it, so riders transfer to the beach train.