The Church of the Epiphany of the Lord, the oldest in the Lukianov Desert, was built starting in 1680 at the initiative of the Reverend Cornelius. Its two-headed volume and elongated two-column refectory represent unique examples of Russian church architecture from the late 17th century. In architectural style, the church and refectory resemble the buildings of the Assumption Monastery in Alexandrov, constructed by royal order. The church can be considered an example of metropolitan architecture from the time of Tsar Fyodor Alexeyevich Romanov. The square structure and the refectory, built by masons I. Konstantinov and I. Semyonov, form a single elongated two-story volume, ending to the east with two polygonal apses: a larger one on the south side and a smaller, side chapel on the north. Above the eastern part rises a common square structure for the main and side churches, elongated in the transverse direction and topped with two domes on round blind drums. From the west, a tented bell tower is visible with an octagonal ringing tier on a square base and two tiers of sound openings in the tent. The bell tower houses five bells from the 19th and 20th centuries. In front of the bell tower is a white stone porch with a four-sided tent on four columns, reminiscent of illustrations from Russian folk tales. It was added later and decorated with modest eclectic decor featuring arches and hanging "weights," in line with the fashion of that time. The rooms of the Epiphany Church on two floors are spacious, while the chapel of Theodore Stratilates is small and has a tiny apse. The chapels of the church and the apses are covered with barrel vaults, while the apse of the chapel has a polygonal conch. The rooms on the sides of the bell tower have trough vaults. Currently, the Epiphany Church is the only functioning church in the monastery. From the large stone porch with columns and a vault topped with a cross, a steep staircase leads to the entrance of the church. The walls of the staircase were painted in 2012 by icon painter N. Berdnikov. Inside the church, everything is simple, without excesses, and the walls are not painted. Small windows and high vaulted ceilings create a soft, muted light even on sunny days. In the central chapel of the Epiphany of the Lord, services are held on holidays and Sundays. In the altar of the chapel, a large part of the relics of the Reverend Cornelius is kept in a brass reliquary. On the altar wall is an icon of the Nativity of the Most Holy Theotokos, which was kept by the believers of the village of Isaevka until 1994. The area for the monastery brethren is separated from the refectory part of the church by a small elevation, where the choir is located, the place of the igumen, and the festive icon is installed. Here, there is also a three-tiered brass candlestick for 32 candles. In the refectory part of the chapel, on the western side of the second pillar, there is a large icon of the Nativity of the Most Holy Theotokos, painted in 1998 based on information about the lost miraculous image. By the southern wall of the refectory part of the church, to the right of the entrance, in a wooden carved kiot, is kept the main revered image in the monastery, the Nativity of the Most Holy Theotokos from the 19th century, found in the Assumption Monastery in the 1990s. The northern chapel, consecrated in the name of Theodore Stratilates, is used for services during the week. The iconostasis of the chapel is three-tiered, made in dark green tones. Among the local icons are the Lord Almighty and the Mother of God "Smolenskaya." On the northern side of the second pillar from the entrance is an icon of the Mother of God "Unfading Flower" from the 18th century. This part of the church is also used for the sacrament of baptism and the great blessing of water on the feast of the Epiphany.