All travellers dread arriving in a foreign city and finding themselves at
the mercy of the band of brigands that run the local taxis. The underground is
often a welcome alternative. There are maps of most metros on
http://pavel.physics.sunysb.edu/RR/metro.html
and a guide to the best route for your journey
on http://metro.jussieu.fr: 10001/bin/cities/english.
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