It currently houses the Department of Anthropology, as well as the the Middle American Research Institute (MARI) and its museum exhibits of ancient and modern life in Mexico and Central America.
Dinwiddie was first constructed in 1923 and then enlarged in 1927 in an Elizabethan style with Alabama limestone by Moise Goldstein and Associates architects. The structure today has been updated with eco-friendly features and has received an LEED Gold certification.