 Complete the following phrase:  When it was erected, the Former Army Headquarters Building was one of the most monumental and most expensive buildings. The architect, Vasily Baumgarten, realized many other important works, especially in the period between the mid-twenties and mid-thirties. Along with the Army Headquarters Building, which remains his central work, he also designed the Russian House in Queen Natalija Street, the palace of the Officers Club in Skoplje destroyed in the 