Chapel of St. Basil the Great, Krylos

The St. Basil's Chapel in the village of Krylos , Ivano-Frankivsk Oblast, was built in 1500 from hewn stone blocks and bricks of the Old Russian Assumption Cathedral and built on its foundations. The cathedral itself was built in 1157 and destroyed by the Mongol-Tatars during their invasion in 1241. The chapel was consecrated in honor of St. Basil the Great.

This ancient building is square in plan, with a small semicircular niche presbytery in the eastern wall of the interior. The building is covered with a semicircular vault and culminates in a roof with a large overhang on the western façade. The entrance to the monument on the west side of the façade is decorated with an arched portal made of white hewn stone, which ends with a developed cornice. A fragment of twelfth-century masonry from the ancient Assumption Cathedral has been preserved in the southern wall.

This chapel became, in fact, the first museum of the history of ancient Halych and preserved valuable architectural details: an altar niche and an original round window that survived from the presbytery of the former Assumption Cathedral. Since 1707, the chapel has housed for some time the Galician miraculous icon of the Mother of God, which, according to researchers, was brought from Constantinople by the Galician prince Yaroslav Osmomysl in princely times and presented to the Assumption Cathedral. In addition, ancient documents, manuscripts, and old prints were kept in the chapel. However, the valuable documents were lost in the maelstrom of the First World War, as the chapel was partially destroyed and looted during that time.

Today, St. Basil's Chapel, together with the Renaissance building of the Church of the Assumption of the Blessed Virgin Mary of the early eighteenth century (which was built from the blocks of the same ancient Assumption Cathedral) and the building of the Metropolitan Chambers of the eighteenth century, form a unique architectural complex.

St. Basil's Chapel in the Wing is now a historical museum, part of the Ancient Halych National Reserve, and is an architectural monument of national significance.