Santa Maria Janua Coeli is a modern parish church at Via Cornelia 89, in the suburb of Monte Spaccato which is just south-east of the junction of the Via di Boccea with the Circonvallazione Settentrionale.
The parish is administered by the Figli di Santa Maria Immacolata (Sons of Saint Mary Immaculate). The dedication is to the Blessed Virgin Mary, under the title of Our Lady, Gate of Heaven. ("Janua Coeli" is modern Latin, hence the "J" which Italian does not have. Neither does Classical Latin.)
The simple neo-Romanesque design by Tullio Rossi shows a gabled façade, with a porthole window over a three-arched lean-to porch occupying the width of the church, with another arch at each end. These arches, except the central one, are glazed with the glazing bars in a wheatsheaf pattern. The exterior walls are rendered in dull yellow. There is a long nave with a short, narrower presbytery, both being under the same pitched and tiled roof.