Santo Domingo de Guzmán Church is one of Mexico's most magnificent churches, famous for its stunning Baroque interior covered in gold leaf. Built between 1570 and 1608, it features three-dimensional details covering nearly every centimeter of the interior. The adjacent ex-convent now houses the Museum of Oaxacan Cultures containing treasures from Tomb 7 at Monte Albán. The contrast between the simple exterior and opulent interior is striking.