Swiss guards, who swear loyalty to the Pope, have served at St. Peters since about 1506 when Pope Julius II della Rovere
brought them as "defenders of the faith and freedom of the church".
The origin of their uniforms is somewhat vague, though some think similar to the original style. They are always holding
a halberd and can be seen at various entrances to St. Peters.
The guard in this image is shown at the private entrance to the Scala Regia, (Holy Stair), under the right tower of the church's facade.

The Scala Regia (1656-66), was built by Gianlorenzo Bernini and connects the Apostolic Palace to the Basilica of St. Peters.
It was commissioned by Pope Alexander VII Chigi to replace a dark and rickety staircase, and provide an impressive descent
for the Pope in ceremonial processions and Papal coronations.

Just above the entrance is an image of the Virgin and Child, flanked by St. Peter with the keys, and St Paul holding a
sword symbolizing his martyrdom.