As it has been since Aztec times , the state , especially Cuernavaca , has been a favorite retreat for those in Mexico City due to its warm year-round climate . That , plus pollution and the September 19 , 1985 Mexico City earthquake has spurred a major housing boom which continues to this day . Most of this boom is centered on the city of Cuernavaca but also Cuautla and other places
1985 Mexico City earthquake
1985 Mexico City earthquake
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