San Sebastiano is an Early Renaissance church in Mantua, northern Italy. Begun in 1460 according to the designs of Leon Battista Alberti, it was left partially completed in the mid-1470s, by which time construction had slowed and was no longer being directed by Alberti. As a consequence, little remains of Alberti’s work apart from the plan, which is considered one of the earliest and most significant examples of Renassiances centrally-planned churches. The plan is in the shape of a Greek cross, with three identical arms centering apses, under a central cross-vaulted space without any interior partitions. The church sits on a ground-level crypt which was intended to serve as a mausoleum for the Gonzaga family. [1]
The complete absence of columns in the façade signified for Rudolf Wittkower [2] a decisive turning-point in Alberti's interpretation of architecture, moving beyond his statements in De Re Aedificatoria where he considered the column the noblest ornament of building. The façade concealing a narthex that runs the full width of the structure is precisely as wide as its height from the entrance level to the apex of the pediment; it may be fitted with the perfect geometry of the square. The temple front has been converted by Alberti into wall-architecture, as Wittkower noted, and a complete series of pilasters, like pillars embedded in the wall, has been elided to the two outermost, and the two flanking Pellegrino Ardizoni's clumsy doorway, [3] which overlaps them and ill suits its space.
A surviving letter of 1470 from the patron, Ludovico III Gonzaga, Marquis of Mantua, to the on-site architect agreeing with Alberti's proposal to reduce the number of pilasters on the portico [4] illuminates Alberti's plan of 1460.
The two outer staircases were added in the twentieth century; prior to 1925 old photographs show the entrance was a single stair to the quattrocento loggia appended to Alberti's design. Wittkower demonstrates that Alberti's plan comprised a set of stairs the full width of the façade leading to five doors (three of which have been filled in as dysfunctional balconies).
The most unexpected motif in the façade is the central break in the entablature presented by the window opening, doubtless intended to be arch-headed under the arched entablature that joins the outer sections, a motif that Wittkower conjectured Alberti knew from the side elevations of the Roman triumphal arch at Orange.
Leon Battista Alberti was an Italian Renaissance humanist author, artist, architect, poet, priest, linguist, philosopher and cryptographer; he epitomised the Renaissance Man.
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Filippo Brunelleschi, considered to be a founding father of Renaissance architecture, was an Italian architect, designer and sculptor, and is now recognized to be the first modern engineer, planner, and sole construction supervisor. He is most famous for designing the dome of the Florence Cathedral, a feat of engineering that had not been accomplished since antiquity, as well as the development of the mathematical technique of linear perspective in art which governed pictorial depictions of space until the late 19th century and influenced the rise of modern science. His accomplishments also include other architectural works, sculpture, mathematics, engineering, and ship design. His principal surviving works can be found in Florence, Italy.
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Ludovico III Gonzaga of Mantua, also spelled Lodovico was the ruler of the Italian city of Mantua from 1444 to his death in 1478.
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De re aedificatoria is a classic architectural treatise written by Leon Battista Alberti between 1443 and 1452. Although largely dependent on Vitruvius's De architectura, it was the first theoretical book on the subject written in the Italian Renaissance, and in 1485 it became the first printed book on architecture. It was followed in 1486 with the first printed edition of Vitruvius.
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Granada Cathedral, or the Cathedral of the Incarnation is a Roman Catholic church in the city of Granada, capital of the province of the same name in the Autonomous Region of Andalusia, Spain. The cathedral is the seat of the Archdiocese of Granada. Like many other cathedrals in Andalusia, it was built on top of the city's main mosque after the reconquest of Granada.
The Tempio Malatestiano is the unfinished cathedral church of Rimini, Italy. Officially named for St. Francis, it takes the popular name from Sigismondo Pandolfo Malatesta, who commissioned its reconstruction by the famous Renaissance theorist and architect Leon Battista Alberti around 1450.
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