In biblical times, Asclepius was widely worshiped as the god of healing. As we continue our view down the southern slope of the Athenian acropolis, we can see the remains of the sanctuary of Asclepius.
Fant and Reddish observe, “Above the Stoa of Eumenes, and to the left (west) of the Theater of Dionysus, can be seen the scant remains of the Asclepeion, a center for healing run by the priests of Asclepius. The sacrificial altar remains, but it is difficult to discern amid the various stones currently being stored there” (A Guide to Biblical Sites in Greece and Turkey, p.26). (We should note that when they say “left” it is from the perspective of one who is down from the acropolis. When you’re on the acropolis looking down, the sanctuary would be to your right of the theater of Dionysus–LM).
Planetware.com has this info:
On a narrow terrace above the Stoa of Eumenes, directly under the steep south face of the Acropolis, is the Asklepieion, the sanctuary of the healing god Asklepios, whose cult – initiated largely by Sophocles – was brought to Athens from Epidauros in 420 B.C. The sanctuary is centered on two sacred springs.
The earliest part of the sanctuary lay at the western end of the precinct, where there are the foundations of a stoa and a small temple. A number of herms have been brought together in the stoa. At the west end of the complex is a rectangular system with polygonal walls dating from the same period. To the south is a later cistern.
The buildings in the eastern part of the precinct were erected about 350 B.C. Immediately under the Acropolis rock, here hewn into a vertical face, is a stoa 50m/165ft long, originally two- storyed, designed to accommodate the sick who came here to seek a cure. Associated with it is the cave containing a spring which is still credited with healing powers; and accordingly the cave is now used as a chapel.
Parallel to this stoa, which was rebuilt in Roman times, another stoa was constructed, also in Roman times, on the southern edge of the precinct; of this second stoa some remains survive.
Both stoas faced towards the center of the precinct, in which stood the temple. This was oriented to the east and had four columns along the front (prostylos tetrastylos). The foundations of the temple and the altar which stood in front of it are still to be seen.
In early Christian times a basilica was built over the remains of the temple and the altar, and some architectural fragments from this can be seen lying about the site.
Click on image for larger view.