It's fascinating to look into different belief systems. A visit to St. Mary on the Strand is an excellent way to better understand a part of the local culture.
You'll soon see why this Innere Stadt house of prayer is a hit with travelers. If you're searching for more to see and do here, Schönbrunn Palace, Vienna State Opera, and Hofburg Imperial Palace are in the area too. They won't take you very long to reach from St. Mary on the Strand.