Established in the year 1841, this Georgian-style church called St. Vincent de Paul Church attracts the pious as well as the tourists. Its significance lies in the fact that it is the oldest Catholic Church in Baltimore. This neo-classical structure was originally built with red bricks, but then was painted white to give that finished effect. The interiors have been through a series of renovations—the exteriors, however, have remained the same since centuries. Don't forget to tour around after mass hours.