The suspended platform, on entrance to the upper basilica, was built for two purposes: to protect and enable views of the archaeological digs of the ancient village of Nazareth and to join the shrines of the Annunciation and Saint Joseph, via the route that runs alongside the Franciscan monastery..
At the centre of the platform there is the baptistery created by the couple Bernd Hartmann-Lintel and Ima Rochelle, German artists in bronze and mosaics, featuring the interior that represents the Baptism of Jesus in Jordan with the descent of the Holy Spirit. The baptistery conserves the remarkable wooden reconstruction of the crusade basilica, according to the hypothesis of P. Viaud, who studied the building at the start of the 1900s.
The floor of the platform is decorated in black and white stone with the coat of arms of the Order of Franciscans and the Custodia and with a large vine overflowing with grapes and birds feeding from them. An image that recalls an ancient Paleo-Christian iconographic motif, which alludes to Jesus, real life, that nourishes the believers. The tree may also remind the observer of that of the parable of the small grain of mustard that becomes a large plant: "The Kingdom of Heaven is similar to a grain of mustard, which a man took and planted in his field. It is indeed smaller than all seeds. But when it is grown, it is greater than the herbs, and becomes a tree, so that the birds of the air come and lodge in its branches (Mt 13,31-32).