Icon painter Andrei Rublev painted the Holy Trinity in the first hall of the 15th century for the iconostasis of the Trinity Cathedral at the request of Nikon of Radonezh, a disciple and successor of St Sergius of Radonezh. The image is considered a paragon example of artistic expression of the Christian doctrine of the Coessential and Triune God.
During his visit to the monastery, the President also examined the development plans for Sergiyev Posad.