This was a tradition at big feasts and the most succulent parts of swans were served to any honored guests. Before Peter the Great came to power and built St. Petersburg, Russian great princes and tsars lived in the Moscow Kremlin. The Tsar's feast. A drawing from the book “Tsar's Feast” by N.V. Roschina E.D. Another drawing from the book “Tsar's Feast” by N.V. Roschina E.D.