At the top of the great tree-lined campo (a Venetian square) of Santo Stefano rises one of the city’s three conventual churches, together with the Frari and Santi Giovanni e Paolo: it was founded by the Augustinian Hermits, who in 1274 sold their first convent of Sant’Anna in Castello to the Benedictine nuns and bought houses here in the centre of the city — the foundation stone was blessed on 7 June 1294 by the bishop of Castello, Querini — rebuilt it in the 14th century and in the 15th clothed it in the flamboyant Gothic that still gives it its face, including the conspicuously leaning bell tower.