St. John the Baptist Monastery

Ivanovsky Convent is a large stauropegic Russian Orthodox convent in central Moscow, inside the Boulevard Ring, to the west of Kitai-gorod, in the district formerly known as Kulishki. It is the main shrine of St. John the Baptist in the Russian capital.

The monastery was first documented in 1604 and long served as a prison for ladies of royal and noble blood. Among the famous nuns were Dosiphea, alleged to be the same person as Princess Tarakanova, and the serial killer Darya Saltykova. In the 1730s, there were rumors that many nuns took part in khlysty rituals; the mother superior was found guilty and sentenced to die.

Source: Wikipedia