The Basilica of San Giovanni in Laterano is one of Rome's most fascinating churches. Situated on Caelian Hill, it first began as a pagan temple before Emperor Constantine declared Christianity legal in the 4th century and dedicated it to Saint John in 324 AD.

The Basilica di San Giovanni in Laterano is one of the four major basilicas in Rome and holds the unique status of being the cathedral church of the Bishop of Rome, who is the Pope. It's the oldest and first papal basilica and served as the primary residence of the popes until the Avignon Papacy.

It has undergone several reconstructions and renovations over the centuries. The current structure, with its impressive façade and Borromini's 17th-century nave, is a magnificent example of Baroque architecture.

In the square in front of the basilica you can find an ancient Egyptian obelisk, which was originally erected at the Temple of Amun in Karnak, Egypt. It was later brought to Rome by Emperor Constantius II.

The Basilica di San Giovanni in Laterano holds immense historical and religious significance, and its architectural grandeur continues to attract visitors and pilgrims from around the world.