P.G.P. Meyboom | Akateeminen Kirjakauppa

In this study we have thoroughly documented the various decorations of
walls and vaults in the building underneath the Baths of Trajan. This
edifice was part of Nero's Domus Aurea, situated in the Augustan Regio
III alongside the southern slope of the Colle Oppio in the modern Parco
delle Terme di Traiano. This building was a large pavilion within Nero's
properties which extended over the Oppius and Esquiline hills. It was
built after the Great Fire of July AD 64, which devastated a large part of
the centre of Rome and gave the Emperor the occasion to fulfill a
long-fostered wish, i.e. that of connecting his properties (forming more
or less a series of horti) with the official palace on the
Palatine. It has a depth of 55 to 60 metres and its actual length is
around two hundred metres. Some hundred and fifty rooms have been
preserved. The height of the rooms varies between ten and eleven metres.