Hong Kong’s tram system dates back to 1904 and still plies some of the same routes, stopping on average every 820 feet. Locals affectionately call the trams Ding Ding because of the bells rung when the trams approach a stop. The main line runs across the whole northern edge of Hong Kong Island, along what was once the waterfront, between Kennedy Bay and Shau Kei Wan Road, passing through the Central Business District and bustling Causeway Bay area. The six routes cover 19 miles and more than 100 stops. Most cars are double-decker and were rebuilt in the 1980s or later, but No. 120 dates back to the 1950s and still sports seats made of rattan and teakwood.