St. Gregory's R.C. Church and Convent, 1931.

St. Gregory's church is an example of a basilican church inspired by early Christian architecture, and specifically modeled on two 5th century Roman churches. The church features a front portico (not visible in this photograph) and a seven story campanile (bell tower). Completed in 1916, the terra cotta-trimmed building was designed by Frank Helmle. Helmle, a prolific Brooklyn architect who mostly worked in Renaissance inspired styles in the early 20th century, designed banks, churches, and a number of landmark civic structures (such as the Boat House in Prospect Park) as the Superintendent of Public Buildings of Brooklyn.

The structure seen in the foreground is the church's rectory (no. 224). Also designed by Helmle, with his then partner Harvey Corbett, in 1922, the building is a modest three-story neo-Classical structure.