The picturesque Iskar Gorge in Stara Planina, near the village of Elenov Dol in Mezdra Municipality and not far from Eliseyna Train Station, is home to Osenovlag Monastery of the Nativity of the Theotokos, also known as the Monastery of the Seven Altars. Despite its geographical location in Vratsa Province, the monastery is part of Sofia Eparchy. Different records date its founding back to the 11th century. Destroyed on many occasions, it was fully restored in the 19th century. Its cross-domed church was built on the site of another, much older church. The more common name of the Seven Altars, which it is also known with, comes from the seven chapels (altars) found inside the church. They have been dated back to the 17th-18th centuries, and are adorned with beautiful carvings depicting plant, animal and Biblical scenes. Four of the altars, lined in the shape of a cross, are separated by inner walls, two are by the front door, and one is opposite the entrance. The carved wooden iconostases date back to the 17th-18th centuries. At different periods the monastery was a literary and educational centre and had its own monastic school with walls covered in murals, one of which showing a rather uncommon scene of the Last Judgement. The legend goes that the monastery was restored by seven boyars, coming from Bessarabia, who also established seven villages in the vicinity. Today it is a large complex, consisting of a church, a cooking house, a set of three dormitories and another one of two, and a bell tower. Very close to it there is a holy spring. The monastery is one the 100 Tourist Sites of Bulgaria. The surrounding area offers wonderful opportunities for tourism and recreation. There is a convenient connection to the train station, from where a bus departs for the monastery daily.