The prefecture of Grevena is located in the northwestern part of Greece and belongs to the western part of the District of Macedonia. The prefecture is bordering with the prefecture of Kozavn (Κοζανής), Kastoria (Καστοριάς), Iwavvivwv (Ιωαννίνων), Trikalwv (Τρικάλων), and Larisas (Λάρισας). The prefecture's area includes 2,290 Km² and its population is equal to 36,717 (according to the last census). The prefecture's area mainly includes mountains. The prefecture's 1/3 and more specific the western part include the eastern side of the mountain Pindos (Πινδός) where mountain Orliaka (Όρλιακα), Lugkos (Λύγκος), Smolikas (Σμόλικας) with the highest point at 2,610 meters at Smolika (Σμόλικα). On the southern part the mountain of Xasia (Χάσια) and Antixasia (Αντιχάσια). On the northern and northeastern the mountain of Bourinos (Βούρινος) and Kamvounia (Καμβούνια). Two main rivers go throw the prefecture of Grevena, the river Aliakmonas (Αλιάκμονα) and Benetiko (Βενέτικο).

The area was populated from the early years. From the ancient years is part of the District of Macedonia with the name of Elumia (Ελυμία) or Eleimeia (Ελείμεια). Thucydides (Θουκυδίδης) wrote: "των γαρ Μακεδόνων εισί και Ελιμιώται", which translates to: 'and the Elimiwtes are Macedocians'. The ancient castles which are located at Spilaio, Alatopetra - Poluneri and other ancient discoveries show the existance of Grevena prior to the pre-Macedonian years, 1500 B.C. On those ancient discoveries show the relation with the sourthern's Greece civilization such as Mukinaiko (Μυκηναϊκό). The area took part on all the country's fights. Soldiers from the area participated during the Trojan war as a light-worriers. During the Alexander the Great people from the current prefecture of Grevena participated both in the front line with horses and without horses. During the Roman invasion it took part against the Romans with a result to obtain some casual in terms of population and religion development of the area. During the Ottoman Empire gave a lot to the nation. This was due to the rough area, which resulted in small interaction between the Greek population and the Turks. From the area a large number of worriers appear which took part during the wars against the Ottoman Empire. Such families include but not limited to the family of Ziakaiwv (Ζιακαίων), Koruzns (Κορυζής), Toskas (Τόσκας) and many others. Also, a large increase of monastery complexes in the area help to preserve the Greek-Christian Ideas and life style.

During the Macedonian war approximately the complete population from the area took part. With the dedication from the residents, Grevena was liberated from the Ottoman Empire on October 13^th, 1912. During the Greek-Italian war (during the WWII) the residents of Grevena were involved to a large extend. Not only as a soldiers (etc. First battalion which entered Korutsa (Κορυτσά) was the Grevena's battalion), but the unarmed people took part during the war using any means they were able to find and help. Most of the unarmed residents for the Grevena area were helping transporting arms, food, clothes, etc. to the soldiers, with the result, on November 1^st-8^th in 1940 to destroy Tzoulia (Τζούλια) division from the Italian army at Anitsas Filippaiwn (Ανίτσας Φιλιππαίων). The fights against the German-Italian forces were organized until March 1943 when it was set free from the external forces after the destroyed and captured sto Farduampo (Φαρδύκαμπο) [bridge of Alliakmona (Αλιάκμονα)] the Italian's battalion which oversee the area of Grevena, after the attack from the people from the areas Grevena, Boiou (Βοϊου) and Siatistas (Σιάτιστας).

The prefecture of Grevena is mainly agriculture area. There is where the National forest of Pindou (Πίνδου), which is one of most important National forest in the country. The impressive view with the beautiful vegetation, large falls and the small rivers with a lot of water and strong current. It is worth it to visit the National Ski Resort Basilitsa (Βασιλίτσας), which is located apporximately 30 miles from Grevena, in the heart of mountain Pindos. Also, monasteries (Osiou Nikavora and Euaggelistras in Panagia, Koimnsns Qeotokou at Spilaio and Saint Paraskeuns at Samarina) around the prefecture of Grevena is something that you need to visit if you are in the area.