 Closer to the confluence of the Om and the Irtysh are the few surviving sombre buildings of the 18th-century fortress.The largest and most opulent church in the city is the Dormition Cathedral, a five-domed edifice in the Russian Revival style, consecrated in 1896, demolished by the Soviets, and restored in the first decade of the 21st century.Another area of interest is Nikolsky Avenue-Krasnykh Zor Street, where a line of merchants' wooden houses still stands.