
Piazza San Pietro at Piazza Pio XII
The white line, St Peter’s Square
St Peter’s Square is told apart from Italy only by a white line along its edge, where it meets Piazza Pio XII. The border was set by Article 3 of the Lateran Treaty of 11 February 1929 and runs for 3.2 km in all.
The square belongs to the Vatican state, yet Italian police keep order in it. When the Holy See holds certain ceremonies there, the Italian authorities must withdraw beyond the outer lines of the colonnades.
Gian Lorenzo Bernini redesigned the square from 1667 to 1676. His colonnades, four columns deep, have 248 columns and 88 pilasters.
Open to all; you cross the line on foot from Piazza Pio XII. Security checks apply for the basilica and papal events.
























