This museum has the country's biggest collection of ancient Maya artifacts, but explanatory information is very sparse. There's a great wealth of monumental stone sculpture, including Classic-period stelae from Tikal, Uaxactún and Piedras Negras; a superb throne from Piedras Negras; and animal representations from Preclassic Kaminaljuyú.
Also here are rare wooden lintels from temples at Tikal and El Zotz, and a room with beautiful jade necklaces and masks. Don't miss the large-scale model of Tikal. The ethnology section has displays on the languages, costumes, dances, masks and homes of Guatemala's indigenous peoples.