The Pühtitsa convent is located on a site known as Pühitsetud ("blessed" in Estonian) since ancient times. According to a 16th century legend, near the local village, Kuremäe, a shepherd witnessed a divine revelation near a spring of water to this day venerated as holy. Later, locals found an ancient icon of Dormition of the Mother of God under a huge oak tree. The icon still belongs to the convent.
A small Orthodox church was built in Pühtitsa in the 16th century. In 1888, the Russian Orthodox Church sent a nun from Kostroma Ipatiev Monastery to establish a convent in Pühtitsa. The convent was founded in 1891. The main Cathedral of the convent was built to a design by Mikhail Preobrazhensky in a Russian Revival style and was fully completed in 1910.
There are six churches in the convent dedicated to a number of Orthodox Christian Saints such as St. Sergius of Radonezh, St. Simeon the Receiver of God, St. Nicholas, St. Anna the Prophetess and others. Prince Sergei Shakhovskoy governor-general of Estonia was convent's patron and protected it from local nobles, mostly German Lutherans, who tried to resist its construction. The convent was first Orthodox monastery built in Estonia to the delight of mostly Orthodox local Estonian and Russian peasants of Jõhvi county.
In 1919, after Estonia became independent from Russia, the new government confiscated most of the convent's land and transferred the convent to the Estonian Apostolic Orthodox Church, independent of Moscow. During the Second World War the battlefront was at times only a few kilometres away from the convent and Germans organized a concentration camp for Russian prisoners of war inside the monastery compound.
Following the second invasion and occupation of Estonia by the Soviet Union in 1944, the convent managed to survive despite the uneasy co-existence with the Communist authorities. Patriarch Alexius II who was the bishop (later the archbishop) of Tallinn and Estonia in the 1960s was instrumental in the fight to keep the convent from closure. In 1990 the Pühtitsa Convent was placed under the direct authority of the Patriarch of Moscow and All Russia, Alexius II. By 1991, the Pühtitsa monastic community consisted of 161 nuns.
Roman Walls of Lugo are an exceptional architectural, archaeological and constructive legacy of Roman engineering, dating from the 3rd and 4th centuries AD. The Walls are built of internal and external stone facings of slate with some granite, with a core filling of a conglomerate of slate slabs and worked stone pieces from Roman buildings, interlocked with lime mortar.
Their total length of 2117 m in the shape of an oblong rectangle occupies an area of 1.68 ha. Their height varies between 8 and 10 m, with a width of 4.2 m, reaching 7 m in some specific points. The walls still contain 85 external towers, 10 gates (five of which are original and five that were opened in modern times), four staircases and two ramps providing access to the walkway along the top of the walls, one of which is internal and the other external. Each tower contained access stairs leading from the intervallum to the wall walk of town wall, of which a total of 21 have been discovered to date.
The defences of Lugo are the most complete and best preserved example of Roman military architecture in the Western Roman Empire.
Despite the renovation work carried out, the walls conserve their original layout and the construction features associated with their defensive purpose, with walls, battlements, towers, fortifications, both modern and original gates and stairways, and a moat.
Since they were built, the walls have defined the layout and growth of the city, which was declared a Historical-Artistic Ensemble in 1973, forming a part of it and becoming an emblematic structure that can be freely accessed to walk along. The local inhabitants and visitors alike have used them as an area for enjoyment and as a part of urban life for centuries.
The fortifications were added to UNESCO"s World Heritage List in late 2000 and are a popular tourist attraction.