St. Peter's Basilica is the largest Christian church in the world.
Santa Maria Maggiore is one of the four Papal basilicas in Rome.
The Archbasilica of Saint John Lateran is the cathedral church of Rome and serves as the seat of the Roman Pontiff.
The Basilica of Saint Paul Outside the Walls is one of Rome's four ancient major basilicas or papal basilicas.
The Basilica of Sant'Eufemia is a significant example of early Christian architecture located in Grado.
The Basilica of Our Lady of the Assumption, St. Hermagoras and St. Fortunatus is a notable architectural structure in Aquileia, Italy.
The Church of the Holy Sepulchre is a church in the Christian Quarter of the Old City of Jerusalem.