Archaeoastronomy and Ancient Technologies 2018, 6(1), 111-137; http://aaatec.org/art/a_fm1 www.aaatec.org ISSN 2310-2144 The Symbolic Use of Light in Hadrianic Architecture and the 'Kiss of the Sun' Marina De Franceschini1,*, Giuseppe Veneziano 2 1 Independent researcher in collaboration with Astronomical Observatory of Genoa, Via Superiore Gazzo, Genova, GE 16153, ALSSA, Italy; E-Mail:
[email protected] 2 Astronomical Observatory of Genoa, Via Superiore Gazzo, Genova, GE 16153, ALSSA, Italy; E-Mail:
[email protected] Abstract In this presentation we will discuss three Roman monuments of the times of Emperor Hadrian (117- 138 AD): the Villa Adriana at Tivoli near Rome, the Mausoleum of Hadrian in Rome (now Castel Sant'Angelo) and finally the Pantheon (also in Rome). In all of them we see luminous phenomena which occur only in few set days during the year; they correspond to astronomical events such as the Solstices or other important dates of the Roman calendar. As we will see, this did not happen by chance and had a precise symbolic meaning. Also, we will explain why there are no written sources about Roman oriented buildings and their illuminations, producing an ancient and rare documentation: the description of the "Kiss of the Sun". Keywords: Archaeoastronomy, Pantheon Arc of Light, Hadrian’s Villa, Mausoleum of Hadrian, Roman religion, Roman Calendar, Emperor Hadrian, Pontifex Maximus, Solstice, Roccabruna, Accademia 1. Villa Adriana The authors of this article studied Archaeoastronomy at Villa Adriana (Hadrian’s Villa1 at Tivoli, Rome), where they discovered the astronomical orientation of the building called Accademia and of the Accademia Esplanade (De Franceschini, Veneziano, 2011, pp.