You may see St. Marys Cathedral across town before you actually find this grand place of worship. Step inside if it's open or just admire the facade from outside.
You'll soon discover why this Peoria principal church is popular with travelers. If you're searching for more to see and do here, Peoria Civic Center, Bradley University, and Par-A-Dice Casino are in the area too. They won't take long to get to from St. Mary's Cathedral.