Together with St. Columba's School, and the Convent of Jesus and Mary school, it occupies a total area of approximately 14 acres near the south end of Bhai Vir Singh Marg Road in Connaught Place.

[3] The church building was designed by British architect Henry Medd, and is based on Italian architecture.

A facade of white pillars supports the canopy, and on each side of the cathedral's entrance porch, there are circular arcaded turrets rising above the roof.

The interior has a towering curved roof, polished stone floors and broad arches.

To the left in the side chapel is a large crucifix, next to it a statue of the Virgin Mary.