Meteora (Greek: Μετέωρα, pronounced [mɛtɛoɾɐ], literally "in the air" from the Greek "META'" "in the midst of" and "AER" aria, "suspended in the air" or "high in the skies" ) is a famous locality located in northern Greece, on the northwestern edge of the plain of Thessaly, near the town of Kalambaka. It is an important center of the Orthodox Church, as well as a popular tourist destination, and has been declared a UNESCO World Heritage Site. Of the twenty-four monasteries built with enormous sacrifices on top of sandstone cliffs, currently only six are still inhabited, partly recovered after years of abandonment.