Other contributors have said "How tall is the La Grande Arche de la Dfense?" is the same question as "Where is La Grand Arche De La Defense?" If you believe that these are not asking the same thing and should be answered differently, click here
Underground lines are referred to as numbers or terminus stations which are signposted in other stations to direct the public. The station "la Défense" is on the line 1 ("La défense" to "Château...