The ruins of the Nymphæum lie on the south side of the Palæstra, and are connected with it by some chambers in which the stucco ornaments are still well preserved, and show what elegance of design and workmanship was bestowed even on the inferior parts of the villa. The curved basin of the Nymphæum can be traced, though it is now overgrown with trees, and some of the niches still covered with stucco-work remain. The western side of one of the adjacent rooms, now used as a granary, is ornamented with niches, and Nibby thinks that this, which was the back of the Nymphæum, was arranged so as to present a fountain supplied from the main pipe of the aqueduct. A similar arrangement, he says, may be seen in the remains of the Nymphæum at Ampiglione. The great vase now at Warwick Castle came from Hadrian’s Villa. [Sidenote: Pœcile.] The Pœcile lies to the south of the Nymphæum. Between them is a reservoir and the remains of a fountain belonging to some building now entirely destroyed. [Sidenote: Castra.] The Athenian Pœcile, of which this is an imitation, was a portico, the walls of which were decorated with the paintings of Polygnotus and Micon. From the description given of it by Pausanias, the Athenian building appears to have been a portico with three sides at least, on one of which the battle of Oenoe was represented; on the second, and longest, the wars of Theseus against the Amazons, and the council of the Greek chiefs after the capture of Troy; and on the third, the battle of Marathon. It thus appears that one of the sides was much longer than the others; and this is the case with the ruin in the Villa of Hadrian, which has three sides, one, 640, on the north, and the others, on the east and west, each 240 feet in length. In Ligorio’s time, 1550, a part of the porticoes, which were of brick, still remained, and some of the paintings corresponding to the Athenian pattern. It is not certain whether there was a similar wall and portico on the southern side. The wall of the northern side, which is the longest, still remains entire. It had a portico on the exterior, which terminated in two circular buildings; and in the centre was the principal entrance to the Pœcile. The present entrance is modern. Both the eastern and western sides are slightly curved. The former contains a recess in the centre connected with the buildings behind. In the centre was an open reservoir of the same shape as the building surrounding it. On the western and southern sides the area of the Pœcile is supported by substructions of masonry, against which are built a number of soldiers’ rooms commonly called the Cento Camarelle. At the corner towards the south-west is a public washhouse, the tubes of which are still in good preservation.