Zurich doesn't have a metro, but a few of the underground and at-grade commuter rail (S-Bahn) stations have interesting architecture.
Photo [Donald Corner and Jenny Young, greatbuildings.com]: The organic concrete structure of Stadelhofen station, built in 1990 by architect Santiago Calatrava.
S-Bahn trains and new Cobra trams use High-German for the next-station announcements. These can be either male or female. It goes something like "[low and high tones] [station name]".