The monastery was founded in AD 982 following the donation of the island by the DogeTribuno Memmo in response to a request by the BlessedJohn Morosini, O.S.B., who wished to establish a monastery there, and who then became the first abbot. Among the first monks of the community which developed there was St. Gerard of Csanád , a bishop and martyr who helped establish Christianity in Hungary. He was murdered in Budapest—on the hill which now bears his name—in the course of a pagan insurrection against the Venetian king then ruling the Hungarians.
Prestige
Over the centuries the monastery became a theological, cultural and artistic center of primary importance in Europe. The monks had considerable autonomy and close links with Florence and Padua, and thus it became also a favoured location for foreign dignitaries to stay while in the city. In 1177 Pope Alexander III and Frederick Barbarossa met here. In 1223 a violent earthquake destroyed the monastery. In 1433 Cosimo de' Medici, when exiled from Florence, took refuge here. Between 1560 and 1562 Andrea Palladio built a new refectory for which Paolo Veronese painted the massive The Wedding Feast at Cana which was displayed there. In 1566 began the construction of the new church by Palladio, who later designed also the "Palladian" cloister. Between 1641 and 1680 Baldassarre Longhena designed the new library, the grand staircase, the monastery facade, the novitiate, the infirmary and the guest quarters. After the fall of the Venetian Republic in 1797, the monastery was deprived of its most precious books and works of art. Napoleon sent The Wedding Feast at Cana to Paris, and at present it is displayed in the Louvremuseum. It is now possible, however, to admire a copy in the refectory which hangs in the place for which the painting was originally created. The monastery was so important that, in 1799, while Rome was occupied by the French Revolutionary Army, the Papal conclave which electedPope Pius VII was convened there. The cardinals met into the chorum nocturnis, where the remarkable canvas St George slaying the Dragon by Vittore Carpaccio is still displayed.
The decline
Nevertheless, in 1806 the monastery was suppressed and the monks expelled; many of the monastery's remaining treasures were sold or stolen. Only a few monks were able to remain to serve in the church, while the monastery itself became a weapons depot. For more than a century it was used as a military garrison, undergoing grave deterioration.