Introduction NORTH AND SOUTH AMERICA Los Angeles Made for streetcars Mexico City The city in the dried up lake Chicago The elevated city Cincinnati The subway that never happened Toronto Weatherproof shopping Montreal Bilingual basements New York City The global capital Boston Tea Party was just the start Buenos Aires Persecution and perseverance EUROPE Gibraltar The riddled rock Madrid Mazes and metros Liverpool First rail tunnels Manchester Pioneers and pipedreams London On Roman shoulders Barcelona The planned city Paris The Swiss cheese of Europe Rotterdam Holding back the sea Amsterdam Hidden under canals Marseille Tunnels made a beach Milan Crypts and pieces Oslo Opportune opening Rome Where roofs become foundations Munich From the ashes Berlin Divided and healed Budapest Thermal layers Stockholm In love with tunnels Helsinki Sheltering an entire city Moscow Secret subterrania ASIA AND OCEANIA Mumbai City of seven islands Beijing Created by hand Tokyo Meeting under a megalopolis Sydney Roads to nowhere.