St. Mary Catholic Church is a parish of the Roman Catholic Church in Indianapolis, Indiana, in the Archdiocese of Indianapolis. Originally founded in 1858 to serve the city's growing German population, it is noted for its historic parish church at the corner of New Jersey and Vermont streets, which was completed in 1912. Designed by architect Herman…St. Mary Catholic Church is a parish of the Roman Catholic Church in Indianapolis, Indiana, in the Archdiocese of Indianapolis. Originally founded in 1858 to serve the city's growing German population, it is noted for its historic parish church at the corner of New Jersey and Vermont streets, which was completed in 1912. Designed by architect Hermann J. Gaul in the late Gothic Revival style, it follows a cruciform plan modeled after the Cologne Cathedral in Germany. The church is listed on the National Register of Historic Places.