By LYNNE WEISS
1) Five Names: Before it was destroyed by Cortez, the Aztec city that stood where Mexico City is today was called 1) Tenochtitlan. In the late 18th century the city was known as the 2) City of Palaces because of the grand mansions built by wealthy nobles and merchants. Today it is 3) Ciudad de Mexico or, as the capital of the nation, the 4) Distrito Federal, or 5) Mexico, D.F. (like Washington, DC).