The Southern Cemetery's earliest graves are from 1858, and it contains the remains of many of the city's founding fathers, including Captain William Cargill, Thomas Burns, and Johnny Jones. The cemetery is notable for its large Chinese and Jewish sections. The top section of Princes Street, from the Octagon to the Exchange, has long been the hub of Dunedin's public transport system. Buses from the north of the city largely pass along George Street and into the Octagon, those from the south pass into the southern end of Princes Street, and those from the hill suburbs arrive at the Octagon via Stuart Street or at the Exchange via High and Rattray Streets. Almost all of these use upper Princes Street between the Exchange and the Octagon as part of their route. In the city's early years trams followed many of these same routes. Until the demise of the system in the 1950s, this area was also at the heart of the Dunedin cable tramway system, with the longer lines running up the slopes of City Rise via High, Rattray, or Stuart Streets. Few, if any, streets in New Zealand contain as many New Zealand Historic Places Trust Category I or Category II protected buildings as Princes Street. These buildings include the following:    The Cargill Monument at John Wickliffe Plaza is also listed (Category I), as are numerous buildings and structures which lie close to the intersection of side roads with Princes Street (e.g., the Category I Crown Roller Mills Building in Manor Place and the Category II Dowling Street Steps).