Old St. Peter's Basilica

Old St. Peter's Basilica was a church in Vatican City built over the believed burial place of Saint Peter and served as a center for Christian worship from the fourth century onward. The building had five aisles, a large central space with tall columns, and stretched roughly 110 meters in length, inspired by Roman public buildings like audience halls.

Construction began under Emperor Constantine around 326 and was completed roughly four decades later. In 1505, Pope Julius II decided to demolish the church to make way for a new structure that became the current basilica.

The name honors the apostle Peter, whose tomb lay beneath the church and drew pilgrims across centuries. The walls held mosaics and statues showing biblical scenes that brought early Christian stories to life for those who visited.

The original building no longer exists, as it was fully demolished to make room for the new basilica. However, some columns and fragments from the old church are preserved inside the current St. Peter's and can be viewed there.

The twisted columns from the old church inspired Bernini's famous baldachin in the new basilica. Some of these spiraling columns may have come from earlier buildings in the eastern Mediterranean and were reused.

Location: Papal States

Location: Municipio I

Inception: 4 century

Founders: Constantine the Great

Architectural style: ancient Roman architecture

GPS coordinates: 41.90222,12.45333

Latest update: December 8, 2025 08:20