Today Saint Mary's Park occupies the area where the former Seminary and College buildings once stood.

Saint Mary's Park, the heart of Seton Hill, is the largest open green space in downtown Baltimore on its Westside.

Fathers Nagot, Tessier, Garnier, and Levadoux opened the Sulpician headquarters in the old One Mile Tavern, then located at West Franklin Street and the Hookstown Road (known today as Pennsylvania Avenue).

This structure, designed by J. Maximilen M. Godefroy, a prominent architect of the time and teacher at the secular college attached to the seminary, is one of the oldest remaining example of Gothic Revival architecture in the U.S. Godefroy, who was born in France, also designed several other structures: these include the city's War of 1812 memorial to its casualties of the Battle of Baltimore during the British attack in September 1814.

[2] Another contributing structure to the historic district is the First Unitarian and Universalist Church at West Franklin & North Charles streets, built in 1817.