This church is located where in the Middle Ages was the North-eastern limit of the city. Its name recalls the groves (fratte) which used to abound in the vicinity. Early in the 17C the rebuilding of the church was begun and completed by Borromini. Interesting is the view of the campanile and the dome which Borromini treated as precious objects. Inside the church there are two Bernini’s Angels sculpted in 1669.