Palacio Nacional Museum . Address 6to Calle beetween 6th and 7th Avenidas, Zone 1, Guatemala. City Schedules All week from 9:00 A.M. to 5:00 P.M. Phone (502)2221-4444   National Museum of History . Guatemala's history is detailed at the National Museum of History, through political documents stemming from its 1821 independence, furniture displays and Guatemala's richest photographic collection. A reference library is included. . Address 9 Calle 9-70, Zona 1 Schedules Monday to Friday from 9:00 A.M. to 4:30 P.M. Phone (502)2253-6149     Front