San Cosimato in Ostiense is at Via Ambrogio Contarini 10, in the Ostiense quarter north-east of the train station of the same name. This is in a small, quiet suburb tucked into an angle of the old city wall. Picture of the church at Wikimedia Commons. [1]

It is the chapel of the convent of Poor Clare nuns, who moved here when they were expelled from their old monastery of the same dedication, San Cosimato in Trastevere, in the late 19^th century.

The church is on the plan of an arch, with an integral semi-circular apse. It and the convent buildings are entirely rendered in brick-red. The entrance façade is dominated by a stark and monumental archway, intimidating in its simplicity. It is almost as high as the church itself, has the proportions of a railway viaduct arch and has no decoration apart from an incised line halfway between the outer and inner edges and a cross finial on top. It encloses a tall arched stained glass window, with the same proportions, above the entrance door.