Holy Trinity Cathedral was designed by renowned architect, Louis H. Sullivan.  It’s an official City of Chicago Landmark and is listed on the National Register of Historic Places.  The Cathedral is usually open for visits and tours on Saturday afternoons from 11am to 4pm. However, it is strongly advised that you call ahead to confirm or contact Father John Adamcio at troika51@comcast.net or at 773-486-6064 to schedule an appointment.

We also encourage you to worship with us at any of our liturgical services.