The name of the village is associated with Lake Itkul, on the shore of which it is located. In the village, among the few houses, stands the active Church of Nicholas the Wonderworker, noticeable from afar thanks to the pristine nature.

The village of Bolshie-Itkul is also known as Itkul, located in the Saltosarayskaya volost by Lake Itkul, on a dirt road, 5 versts from the village of Saltosarayskoye. Until 1862, a chapel was built here in honor of Saint Nicholas the Wonderworker, which was part of the parish of the Holy Trinity Church of the village of Chashinskoye. Every year on May 9, the local clergy held a service.

The single-altar wooden church on a stone foundation was built with the funds of the parishioners and was laid on September 3, 1906. On this day, a procession from the church of the village of Chashinskoye took place to the site of the laying of the Bolshie-Itkul Church, led by the archpriest A. Eleonsky. The church was consecrated in 1909 and was part of the Trinity Chashinsk parish. It is a two-light square with a low single-domed octagon, a small refectory, and a two-tiered bell tower surrounded by a metal fence. The temple, executed in the style of Russian wooden architecture, is a unique monument of cultural heritage with a history of over a century.

The church was attached to the Holy Trinity Church of the village of Chashinskoye, and a chapel also operated in the village of Bolshie-Itkul.

During the Soviet era, the church was closed but was reopened in 1944.