Quadrifora

It appears in towers and belfries on top floors, where it is necessary to lighten the structure with wider openings.

[1] The quadrifora is divided vertically in four parts by three small columns or pilasters, on which four arches rest, round or pointed.

[3] Less popular than the bifora or trifora, the quadrifora was nevertheless used in the Romanesque, Gothic, and Renaissance periods.

In the 19th century, it came back in vogue in the period of eclecticism and the revival of old styles.

Compared to the trifora, the quadrifora was generally used for larger and more ornate openings.