Trajan’s Market 
,
built directly in the cliff, they nevertheless make a whole with
Trajan’s Forum. It was a great commercial complex, with
several storeys of shops and stores. It was also a centre
for the dispensing of food to the people. You notice in the
lower part the great exedra. On the right hand side of the market,
slightly in the shade, the slope of the
Vicus Laci Fundani 
.
This way linked the Baths of Constantine and the district of Subura at the foot of the Quirinal.