Of the Odeon, only  the portico (porticus post scaenae) which is behind the scene, paved with rough white mosaic, is visible and accessible.

Making way through the branches of a small forest, on the opposite side, there are the walls of scene. The Cavea is completely underground.

At the top of it was a small shrine, of which the walls can be glimpsed.

In 1753 Giuseppe Pannini published a detailed survey of the theater with the description of its marble decoration. At his time the building was in a better state of conservation and had not been stripped of its most precious marbles.

The oldest excavations we know of took place in the Odeon, and date back to ca. 1492, during the papacy of Alexander VI Borgia.

As Pirro Ligorio recounts in his Codices, the statues of seated Muses were found; today they are in the Prado Museum in Madrid (Spain).

Some scenic masks were also found there, which today decorate the Belvedere Courtyard of the Vatican Museums.

The Odeon is the second Theater of the Villa, located in the highest area of ​​the Accademia Esplanade which, as we have seen, was the Acropolis, the sacred area of ​​the Villa, dedicated to Isis and Osiris. 

It is likely that it was used for the sacred theatrical representations linked to the cult of the goddess.

Marina De Franceschini, Villa Adriana - Mosaici, pavimenti, edifici. Roma 1991, pp. 592-594.

Marina De Franceschini, Giuseppe Veneziano, Villa Adriana. Architettura Celeste. I segreti dei Solstizi. 2011, pp. 111-147, con bibliografia precedente

Marina De Franceschini,. "Un paesaggio sacro nella Villa Adriana di Tivoli: la Spianata dell’Accademia" in Experiencing the Landscape in Antiquity 2, BAR S3107 (Armando Cristilli, Fabio de Luca, Gioconda di Luca and Alessia Gonfloni eds), published by BAR Publishing (Oxford, 2022), pp. 457-464.

Marina  De Franceschini, Villa Adriana. Accademia. Hadrian's Secret Garden, vol. I. History of the excavations, Ancient sources and Antiquarian Studies, from the XV to the XVII Centuries,  Pisa Roma 2016, pp. 26-28 con altra bibliografia precedente

Pannini 1753, Rausa 2002, Mangiafesta 2008.