Portrait of Hadrian on a modern bust

The dimensions and richness of decoration in this room suggest that it was the most important. Some traces of the frescoes which once covered its walls remain. They consisted of large scale images, articulated by columns and architectural elements, and, above the door, small landscape scenes were painted. 
The room is also called the Room of Saint Peter because one of the surviving scenes depicts a cure operated by Saint Peter in front of the Temple in Jerusalem.