Passengers try to hand over a slipper from a tram in Melbourne, Australia, Jan. 28, 2013. Melbourne's trams network is one of the largest functioning tram networks in the world. Among all the routes, No. 35, the City Circle Tram provides a free and convenient way for visitors to see the sights of central Melbourne while experiencing a ride on one of the city's much loved heritage trams. [Xinhua/Chen Xiaowei]