The largest building in the world which is made of wood, the Russian Orthodox Church, which is located on the island of Kizhi. This church was built 150 years ago. The church is 37.5 meters high, and it is interesting that it was built in the 18th century without a single nail nailed. The only metal bell on it is located inside the church. The church was recently renovated, but did not use anything other than wood, to continue to remain unique buildings.