Rolling stock of the National Railway Museum (Museo Nacional de los Ferrocarriles Mexicanos) in Puebla de Zaragoza. 5 of 6. A museum mail baggage car in the collection of historical railway objects. Labels above e th bags identify which stop the bags are to be dropped off. The National Center for the Preservation of the Cultural Heritage Railroad main attractions are passenger cars, a permanent exhibition of locomotives, cabins, freight cars, machinery, tools used in the operation of railways.