Midway airport to downtown 有小火车,http://www.transitchicago.com/orangeline/
downtown to Chinatown 坐 CTA 红线 3 个站。
Summer 几个景点间有Free Trolleys, http://www.virtualtourist.com/travel/North_America/United_States_of_America/Illinois/Chicago-777256/Transportation-Chicago-Trolleys_some_are_FREE-BR-1.html
4月底天气还是有点冷,树木刚发芽。有几个大博物馆,每个可呆大半天,工业展览馆较远(芝大旁)夏天有 Free Trolleys 可到。