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Second-busiest underground network in Europe is in paris

The most common mode of transportation for citizens in Paris is the city's subterranean rail system, which is used by over 5 million people every day. It is Europe's busiest subterranean network after Moscow. Count your stations when using the subway - you never know where you'll wind up if you don't, as the Paris Metro system, unlike other big cities, does not announce its stops.
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