The Church of the Transfiguration is the largest remaining wooden structure in the world , showcasing stunning wooden architecture which has survived since the 18th century . The church is linked with Intercession Church and Bell Tower ; all of which have become a UNESCO Heritage Site . At 37.5 metres high and including an octahedral centre , the construction is complex . Three different levels incorporate 22 domes covered with over 30,000 aspen shingles . The church is impressive not only aesthetically , but has also been constructed without the use of nails . Instead , carpenters have utilised wooden logs which have been connected at corner angles . The use of pine , spruce planks and aspen have ensured the design is not only adaptable , but sustainable .

29