Lake Baikal, on the banks of the Angara River, surrounded by white birch forests and white snow, is actually an open-air museum. The buildings here are all built. The construction of the Irkutsk reservoir caused the water level to rise. So the ancient buildings on the Angara River, including the Ilimsky Castle built in 1667 and the Kazan Chapel built in 1679, have all been moved here. The early pioneers of Siberia in Russia lived in these wooden houses built of huge logs. Each wooden house is an exhibition hall. In cold Siberia, only buildings made of wood and rope are used. It can keep the cold air out, the snow and ice outside the window, and the interior is as warm as spring. Along the snow-covered path, you can walk all the way to the Angara River, the only river flowing out of Lake Baikal. The river is wide and calm, and the opposite hillside is endless coniferous forest.