Lopasnya-Zachatevskoe, Federal cultural heritage estate in Chekhov, Russia.

Lopasnya-Zachatevskoe is an estate in Chekhov consisting of a main residence, a church dedicated to the Conception of Anna, and extensive park grounds surrounding the structures. The complex preserves the typical arrangement of a noble property, with residential buildings, service areas, and landscaped gardens that remain accessible today.

The estate on the Lopasnya River belonged to the Vasilchikov family for centuries, passing by inheritance from the 16th century until 1917. The five-domed church was built in 1689–1694 at the expense of Savva Vasilchikov and consecrated in honour of the Conception of Saint Anna, which gave the estate its second name. The small manor house, a late example of Elizabethan Baroque, is dated to the 1770s and linked to Alexander Vasilchikov, a favourite of Catherine II; its attic storey and the Empire bell tower were added after the war with the French by Nikolai Vasilchikov.

The estate displays traditional Russian architectural features that show how noble families organized their domestic spaces during the 1800s. The layout and preserved furnishings offer visitors a direct sense of how daily life unfolded within these rooms.

The grounds are best explored on foot, with pathways through the park clearly laid out and accessible for most visitors without special equipment. Comfortable footwear and adequate time are recommended to see both the buildings and the garden areas at a relaxed pace.

The only surviving service building is the ruined stable block, damaged by fire; the wooden manor houses and other outbuildings are gone. In 1917 a box of Pushkin's business papers and the manuscript of his unfinished "History of Peter I" was found at the estate.