It is not known for certain when the Svyato-Troitsky Monastery was established and two theories exist in this regard. The first is that it was founded in 1208 during the reign of Roman Glebovich in Ryazan, the second is that it was founded in 1386 when St Sergius of Radonezh visited Pereyaslavl-Ryazansky to make peace between Dmitri Donskoy and Oleg of Ryazan. In any case its main cathedral – Trinity Cathedral - dates from 1695 and is the oldest building in the monastery. There are two other churches inside: St Sergius of Radonezh’s Church which dates from 1752 and the Korchemnaya Our Lady of the Sign Church which takes the form of Holy Gates as the monastery’s main entrance from Moskovskoe Shosse. Closed in the Soviet period it was only re-opened in 1995. Although when it was founded it would have been located away from other buildings outside the city, now it is located in a rather industrial area on the very edge of the city.