The Inn of the Deity Pan and the Mithraeum of the Coloured Marble were discovered in 2014 by the Ostia Marina Project (University of Bologna, under the direction of Massimiliano David). The name was given to the inn after the discovery of a black-and-white mosaic in room 3, with a depiction of Pan fighting with Eros. The mithraeum is not just a single room, but a mithraic complex that completely occupied the inn. The name derives from the multicoloured marble floor of the spelaeum.
The inn was entirely built in opus vittatum mixtum technique, dated to the mid-third century AD.