Excursion to Sergiyev Posad and visit to its monastery. Located about 70 kilometers to the north from Moscow on the Imperial Road of the Golden Ring, Sergiev Posad (formerly known as Zagorsk) is one of the most important centers of Russian Orthodoxy. Its construction was begun by St. Sergius, who established a monastery-fortress there in 1340 that would over the course of the centuries become one of the most important spiritual centers in Russia. There you will see the characteristic elements of the military architecture of the 15th-18th centuries, the period of its development. Nowadays, the Monastery of the Holy Trinity and St. Sergius is still operational and is home to a seminary, the Technological Institute, the Pilgrimage Centre, and the residence of His Holiness the Patriarch of All Russia, thanks to which the city picked up its nickname as the “Russian Vatican.” Among its numerous churches and cathedrals, the most notable and significant are the Cathedral of the Assumption with its blue domes and the Cathedral of Dormition. It houses the tomb of Boris Godunov and his family as well as a copy of Andrei Roublev’s famous icon of the Trinity, the original of which is in the Tretiakov Gallery in Moscow. Sergiev Posad has been designated by the UNESCO as a World Heritage Site.