The Moscow residence of the Russian Tsars was built in 1849 by the architect Konstantin Ton, who also designed the Armory and the Church of Christ the Saviour. The Palace complex was made up of 19th Century structures erected for the family of Emperor Nikolai I and surviving buildings from previous eras. the palace's interior, comprising more than seven hundred rooms, quickly became celebrated for the richness and refinement of its decor. It is no coincidence that the palace is considered a museum of Russian palatial interiors, where all styles from Renaissance to Byzantine can be found. In the Soviet period, the Andreevsky and Aleksandrovsky Halls were combined to form the seat of the Supreme Soviet of the USSR. In the nineties the two rooms were restored to their original appearance.