While the Basilica is a colossal bow to the ancient world with its serene and seemingly timeless exterior, the interior is equally beautiful, reflecting the best of Rome and Greece with the column, arch, and dome. As visitors enter they travel back in time to the first cathedral in the United States, built just after the promulgation of the U.S. Constitution.
The structure is considered one of the most prominent designs of the early American architect Benjamin Henry Latrobe (1764-1820), also called the “father of American architecture.” A native of England, Latrobe was a neoclassical architect who emigrated to the United States in 1796.
While the Baltimore Basilica resembles a Roman temple from the exterior, on its roof it has two curious spires or cylindrical towers with onion-shaped domes that hold two bells. These resemble the former spires that once graced the rooftop of the Pantheon in Rome, reflecting in some ways the symbolic Christianization of the pagan architecture of old, making the old architecture distinctly Christian, with bells to sound the hours of prayer.
In 1784 Pope Pius VI set up the Prefecture Apostolic of the United States, encompassing the entirely of the new nation, with Baltimore as its city. In 1789 the same pope erected the Diocese of Baltimore. The following year, Carroll traveled to England where he was consecrated a bishop in a castle by a Benedictine bishop. Upon his return, in the year 1800 the first native-born American citizen was ordained a priest in Baltimore at St. Peter’s Pro-Cathedral, built in 1770.
To this day, the Archdiocese of Baltimore remains the premier or the first see in the United States, due to its prerogative of place. At the same time, it curiously was never given “primatial” status by the Holy See. Because it is the oldest diocese in the U.S., the Archbishop of Baltimore has the right of precedence in the nation at liturgies and events with the bishops.
Over the years many great events were held at the cathedral, including all the first big ordinations and episcopal consecrations of most of the first American bishops to fill the ever- multiplying dioceses as the nation grew. Historically, the basilica held the record for many years as the place where the most number of ordinations in the country had been celebrated.
In 1862 during the American Civil War, the Union General Joseph Revere, a grandson of the Revolutionary War figure Paul Revere, formally converted to the Catholic Faith during the war and was baptized and received into the Faith in the Basilica, despite the ongoing hostilities. A week later he received his First Holy Communion and returned to the battlefield.
The red galero hat of Cardinal Gibbons can still be seen, suspended since his death, a reminder to pray for the response of his soul. There is a story behind this custom that arose in Europe, urging the faithful to pray for reposed members of the College of Cardinals; the tradition being that the cardinals' hats are suspended in their cathedrals until their souls are eventually released from Purgatory, symbolized by when the hats decay after many years, falling in pieces to the floor.
Pope John Paul II visited the Basilica in 1995 (and previously in 1976 at Cardinal). In 1996 Mother Teresa visited on her final visit to the United States. Other saints have visited, too, including St. John Neumann, the founder of the Catholic school system in America and Blessed Fr. Michael McGivney, founder of the Knights of Columbus, ordained at the Basilica in 1877.
For interesting videos on the history of the Basilica, see here.