Monasterio de San Francisco

This bright yellow Franciscan monastery and church is most famous for its bone-lined catacombs (containing an estimated 70,000 burials) and its remarkable library, where you can take in the sight of 25,000 antique texts, some of them predating the conquest. But this baroque structure has many other things worth seeing: the most spectacular is a geometric Moorish-style cupola, over the main staircase, which was carved in 1625 (restored 1969) out of Nicaraguan cedar. In addition, the refectory contains 13 paintings, of the biblical patriarch Jacob and his 12 sons, attributed to the studio of Spanish master Francisco de Zurbarán.