Design for the Basilica of St. Peter's in the Vatican, from "Speculum Romanae Magnificentiae"

Longitudinal Section Showing the Interior of Saint Peter's Basilica as Conceived by Michelangelo (published in 1569), from "Speculum Romanae Magnificentiae"

Etienne DuPérac

Design for the Basilica of St. Peter's in the Vatican, from "Speculum Romanae Magnificentiae"

After Antonio da Labacco, After Antonio da Sangallo, the Younger, Antonio Salamanca

Antonio da Sangallo's project for St. Peters, plan of the façade extended to the left with a tower

After Antonio da Labacco, Antonio Salamanca

St. Peter's, from "Speculum Romanae Magnificentiae"

Etienne DuPérac, After Michelangelo Buonarroti, Claudio Duchetti, Antonio Lafreri

Unexecuted Design for the Façade of the Church of Santa Maria in Araceli in the city of Vicenza

Giacomo Monticolo of Vicenza

Elevation Showing the Exterior of Saint Peter's Basilica from the South as Conceived by Michelangelo (published in 1569), from "Speculum Romanae Magnificentiae"

Etienne DuPérac

St. Peter's, from "Speculum Romanae Magnificentiae"

After Antonio da Sangallo, the Younger, After Antonio da Labacco, Antonio Salamanca

Plate 20, from "Trattato delle Piante & Immagini de Sacri Edifizi di Terra Santa" (Treatise of the Plans & Images of the Sacred Buildings of the Holy Land)

Jacques Callot, After designs by Bernardino Amico, Pietro Cecconcelli

St. Peter's, from "Speculum Romanae Magnificentiae"

Giovanni Ambrogio Brambilla, After Michelangelo Buonarroti, Claudio Duchetti, Antonio Lafreri

Santa Maria in Vallicella, elevation; plan (recto) blank (verso)

Drawn by Anonymous, French, 16th century

View of the rear entrance of the Basilica of S. Maria Maggiore, from Veduta di Roma (Roman Views)

Giovanni Battista Piranesi, Bouchard & Gravier

Cross sections of the Chapel at Chateau d'Anet

Jacques Androuet Du Cerceau