Uniqueness of the Prioratsky palace in Gatchina not only in historical associations. Priorat is unique also because this only thing the construction which has remained in Russia in rammed earth technique! The author of this surprising building is the architect Lvov. Nikolay Lvov is one of the most erudite people of the time, the architect, the draughtsman, the engraver, the collector of national songs, the witty man... Probably, having been born in France, he, undoubtedly, would be the friend and the associate of Encyclopaedists. Where are you, brilliant century? Where are you, geniuses?