Ershovo Manor, Federal cultural heritage estate in Yershovo, Russia

Ershovo Manor is a two-storey brick estate house with 14 rooms and two large halls per floor, built in the late Moscow Empire style under Count Vasily Olsufyev. Its courtyard facade has a deep loggia and a white-stone Ionic portico; a three-part arch and a terrace open onto the landscape park. The park retains alleys of century-old lindens and a pond with islands linked by bridges.

From 1624 to 1764 Ershovo belonged to the Saltykov boyar family; in 1764 Vasily Saltykov's daughter married Adam Olsufyev, Catherine II's cabinet secretary, and the village passed as her dowry. The Olsufyevs kept it until the October Revolution. The surviving buildings were raised under Nicholas I for Count Vasily Olsufyev in late Moscow Empire style, supervised by architect A. G. Grigoryev, who designed the bell tower church in 1826-29. After the revolution the house became a museum of gentry life; the church was blown up on 11 December 1941 and rebuilt in 1995-99.

The estate's name alternates with Troitskoye, after its Trinity church. Afanasy Fet stayed with owner Alexei Olsufyev, helping translate Latin texts, and wrote poems here, including lines addressed to the hostess; a marble plaque was placed in the parish church in 1903. The blue drawing room held Olsufyev family portraits and Italian landscape wallpapers brought in the mid-19th century.

The estate lies 3 km north of Zvenigorod, in the settlement of Doma Otdykha Yershovo. Since 1928 the grounds have served as a rest home and sanatorium, so the park, pond and alleys are shared with guests; the main house and the 1995-99 rebuilt Trinity church are the points to find. Access to interiors is not guaranteed.

The bell tower, built in 1826–29 to a design by A. G. Grigoriev, was tall enough that Moscow's Cathedral of Christ the Saviour could be seen from it in clear weather. On 11 December 1941 retreating German troops locked wounded Soviet prisoners and civilians inside the Trinity Church and blew it up; it was rebuilt from Grigoriev's surviving drawings between 1995 and 1999.