According to the configuration, the Poshekhonya plan with a pronounced radial-ring system of streets is an incomplete circle based on the Sogu and Sogu rivers. The ancient part of Poshekhonye is located on the arrow at the confluence of the rivers, where the monastery village of Pertoma used to be, which received the status of a city in 1777 and a new name — Poshekhonye. In 1757, Peter Timofeevich Belavin, a local rich peasant, received the blessing of Metropolitan Arseny (Matsievich). The cold cathedral of the Trinity Cathedral was erected. A hundred years later, the construction of a new bell tower began. The project of Konstantin Ton for the tower of the Simonov Monastery in Moscow was taken as a basis. After the revolution, the bell tower lost its bells, and it and the Trinity Church were used for various household purposes. In 1997, a cross was re-erected on the bell tower. In 2005, the dome was re-installed above the temple.