Once a village, now part of the almost unbroken urban development from Athens to Kephissia (and beyond), Chalandri lies slightly N of the N limits of both Hymettos and Tourkovouni, midway between them, and 4 km S of Marousi, the ancient deme of Athmonon. Thus it once occupied an important position in the Athenian plain alongside roads leading N to Pendeli and E to the Mesogaia. Many antiquities have been found in this area, for example, graves from Late Classical and Hellenistic times, an archaistic relief of Dionysos, and a Roman tomb of the 2d c. A.D., besides inscriptions and reused architectural blocks. The tomb has its vaulting intact, and, with the addition of an apse, now serves as the Church of the Panagia Marmariotissa.
Despite the lack of more specific evidence, it seems obvious that Chalandri has inherited the location of an ancient village. Because it is known that the demes of Athmonon and Phlya were in part contiguous (IG II2 2727.48-49), and because all the demes around Marousi have been identified except to the S, scholars agree that Chalandri must therefore be the site of Phlya. As such, it possessed a telesterion restored by Themistokles (Plut. Them. 1.3), had a tradition of mystic rites older than those at Eleusis (Hippol. Haer. 5.20), and was visited by Pausanias (1.34.1), who recorded several other cults. (C.W.J. ELIOT)
Info: Princeton Encyclopedia
(Princeton Encyclopedia of Classical Sites, from Perseus Project)