Many tourist attractions in downtown Milwaukee can be explored on foot and the skywalk network in the city centre conveniently protects pedestrians from the elements. However, if visitors wish to travel a bit farther, the Milwaukee County Transit System (MCTS) operates buses on more than 50 routes in the city and surrounding region.Single tickets can be bought on board but exact change is required. Multiple-ride tickets and weekly or monthly passes can be bought at outlets such as supermarkets throughout the city. The Milwaukee Trolley Loop in the city centre is aimed at tourists and stops at major attractions.The Milwaukee Intermodal Station is the city's transport hub, with Amtrak trains connecting to Chicago as well as long distance buses. Cycle rickshaws also operate in the city and a ferry service runs across Lake Michigan to Muskegon.Taxis often queue at hotels and other attractions, though visitors should not assume it will be easy to hail one on the street. In recent years, Milwaukee has worked hard to make the city bicycle-friendly.