In 1676 – 1678, a wooden tsar’s mansion, with a stone basis, living chambers and upper premises for summer (the so-called cherdak’s – “garrets”) was built at the Tsar’s Court, on the Izmailovsky Island. It resembled the palace of the Tsar Alexey Mikhailovich in Kolomenskoye. The children of Alexey Mikhailovich often stayed at the palace. There, at the industrial part of the Tsar’s Court, the young Tsar Peter Alexeevich found the famous boat that was later called “grandfather of the Russian fleet”.