Midway airport to downtown 有小火车

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。