Grevena is a Greek city and it is one of 51 prefectures of Greece. Grevena is a small city which is in the west of Macedonia. Its population is 12,037 inhabitants according to 2001 census. It is built at a height of 500 meter approximately. West of Grevena is the mountain range of Pindos with many forests and with a ski center which it is named Vasilitsa. This ski center has a lot of snow throughout the winter. 