The Basilica of the Annunciation (the place where the angel Gabriel appeared to Mary) was designed by the Italian architect Giovanni Muzio. He conceived a plan of two churches, one above the other and interconnected.
The lower church preserves the Holy Grottos and the remains of the Byzantine and Crusader churches, which bespeak an uninterrupted cult and authentic tradition.
The roof opens in a starlike lantern in the centre of the upper church to which there is access by stairway.
The upper Church is the Latin Parish Church of Nazareth.