The next stop was Baltimore Cathedral. This is a Roman Catholic church, the full name of which is: “Basilica of the National Shrine of the Assumption of the Blessed Virgin Mary”. It is considered America's first cathedral because it is the first cathedral built after the adoption of the Constitution. It was built between 1806 and 1821. Since Baltimore has the Cathedral of Mary, Queen (a building from 1959 that I have left out), it is now only a co-cathedral.