On 15 November 2019, a 80-ton central dome was erected on the cathedral, the height and diameter of which are 12 meters.[8] In total, the cathedral has six domes, four of which are identical, each of which weighs 34 tons, the central one is the largest and one is on the belfry. The design has a high alloy steel frame with a strength factor from 300 to 1500 years.