Kalambaka (Καλαμπάκα) may date as early as 200 B.C.; it was certainly a location in the 10th Century Byzantine Empire. The town itself sits below The Meteora, a great site of monastics and monasteries since the 13th Century A.D. but dating back to a location of Christian Ascetics since the 11th Century A.D.
The monasteries dominate the landscape to the North:
(Administrative note: We will be taking a break from Greece next week as we head back to the Sierra Nevada Mountains.)