The Osenovlashki Monastery, popular also as Sedemte Prestola (i.e. the Seven Altars) is situated in the picturesque valley of the river Gabrovitsa in the skirts of the northern Balkan Mountain Range, just at the foot of the Izmerets mountainous peak. The monastery is at a distance of 80km from Sofia and 50km from Vratsa. One can reach the monastery driving to the town of Mezdra, passing through the charming Iskar gorge. Abou 100km from Sofia.

http://www.bulgariamonasteries.com/en/osenovlashki_monastery.html