Kumehnen Church, Church ruin in Kumachyovo, Russia

Kumehnen Church is a ruined Brick Gothic church in Kumachyovo, built around 1390 with a fieldstone and brick nave and a narrow rectangular choir that predates it. The north wall has no windows, while the south facade and choir walls are divided by a row of pointed blind arcades. The tower was heightened with brick before 1500; its upper part was removed in the 1950s, and the west side of the base collapsed in 1989.

Built in 1390, the church began under Teutonic Knights authority and transitioned to Prussian Ducal rule in 1525 as the region's political boundaries shifted. The building became part of Russian cultural heritage following major territorial changes in 1945.

Kumehnen was a Kirchdorf, a village built around its church, before the Reformation, and its parish was split by the Alkgebirge ridge into eastern and western parts. In the 14th century the parish was served from Medenau, now Logwino. In 1925 the parish counted 2328 members from more than twenty villages, and its registers are kept in Berlin-Kreuzberg.

The church sits in the rural settlement of Kumachyovo and is most easily reached on foot from the village center. The structure is accessible from the outside, though visitors should know the location is remote with limited nearby facilities or services.

Two of the three bells were cast in Königsberg around the mid-18th century, but the oldest dates from the time of the Teutonic Order. The organ, built by Johann Josua Mosengel in 1695/97 with one manual and no pedal, was replaced in 1884 by a Max Terletzki instrument kept in the old case.