This was a good unesco week, if i'm not mistaken, i've received cards from 7 different unesco sites. Polina "poncha" from Russia helped with this 3.
This is the Transfiguration Church in Kizhi an island on Lake Onega. It is one of the most popular tourist destinations in Russia and an UNESCO World Heritage Site since 1990.
"The Kizhi Pogost, as it is known in Russian, is the area inside the perimeter wall or fence and includes 2 large wooden churches and a bell-tower. The entire island of Kizhi is a museum with many historically significant and beautiful wooden and log structures including windmills, chapels, boat- and fish-houses, saunas, barns and granaries, and homes.
The jewel of its architecture is the 22-domed Transfiguration Church (was founded in 1714), with a large iconostasis — a wooden screen covered with religious portraits, featuring much gold leaf. This iconostasis is in Petrozavodsk until restoration of the Transfiguration Church is completed (scheduled completion is 2014, the 300th anniversary of this monumental church). The massive Transfiguration Church (also known as the "summer church") is about 37m tall, making it one of the tallest log structures in the world." - in: wikipedia
"The Church of the Ascension was built in 1532 on the imperial estate of Kolomenskoye, near Moscow, to celebrate the birth of the prince who was to become Tsar Ivan IV ('the Terrible'). One of the earliest examples of a traditional wooden tent-roofed church on a stone and brick substructure, it had a great influence on the development of Russian ecclesiastical architecture." - in: http://whs.unesco.org/en/list/634
"The Western Caucasus, extending over 275,000 ha of the extreme western end of the Caucasus mountains and located 50 km north-east of the Black Sea, is one of the few large mountain areas of Europe that has not experienced significant human impact. Its subalpine and alpine pastures have only been grazed by wild animals, and its extensive tracts of undisturbed mountain forests, extending from the lowlands to the subalpine zone, are unique in Europe. The site has a great diversity of ecosystems, with important endemic plants and wildlife, and is the place of origin and reintroduction of the mountain subspecies of the European bison." - in: http://whs.unesco.org/en/list/900