The convent at the Church of Santo Domingo de Guzman (see Virgin Mary) was converted to a gorgeous museum of Oaxacan cultures in 1972. Hundreds of lovely artifacts on display, but I was perhaps most captivated by the turquoise-encrusted skull from Tomb 7 at Monte Alban. Dates to the 14th century. [NOTE: Prior to its conversion to a museum, the convent had served as a military barracks for 40 years].