Detail of pilaster base; The prestigious project for a new eastern end (tribuna) to the church of S Maria delle Grazie, Milan, was commissioned by the Duke [Ludovico Sforza] as a mausoleum; work began on 29 March 1492. The basic design, attached to Guiniforte Solari's Late Gothic nave (1463), seems to have been Bramante's, although this has not been proved conclusively; if so, he must again have been working in conjunction with Amadeo and Dolcebuono, who are documented. The layout consists of an enormous square crossing crowned with a hemispherical dome, vast apses to left and right and a square chancel covered by a remarkable umbrella vault and with a further apse beyond. Bramante's fascination with apsidal design, which characterizes virt...