As to use :
It could be interesting to read the curiosities about this church.
San Jacopo Sopr'Arno, has been defined by Florentine people the church "with its backside in the river”.
This Church is linked to the traditional Palio dei Navicelli: on 25 July, on the occasion of San Jacopo, Florentine boatmen have competed since 1200 in a kind of regatta along the river, along a stretch of water from Ponte Vecchio to the fishery of Santa Rosa. Probably inspired by the sea battles of the ancient world, the Palio dei Navicelli, in honor of the Saint, started right from the Church of San Jacopo Sopr'Arno.
According to Vasari, here the great Brunelleschi built a dome cover in 1418 in which he experimented on a small scale the techniques he will use in the future to create the majestic dome of the Duomo.
The particularity of the Church is represented by the fact that the apse, as well as the houses close to it, rest on the characteristic "sporti", or architectural protuberances that support the buildings making them protrude on the river or, as the official name of the building suggests , "Sopr'Arno". When the river level rises, it is easy to see how the waters touch the apse of San Jacopo, for this reason dubbed by the Florentines "the church with the backside in the Arno". "
Reading of a newspaper article with students
https://www.pressreader.com/italy/corriere-fiorentino/20170328/281599535332949
Analysis of pictures avalaible on web
http://www.chiesaortodossa-firenze.org/photosEN.html