Do onion-domed churches, icons, and imperial treasures — served with shots of vodka and dollops of caviar — sound appealing? Then cruise between Moscow and St. Petersburg, a route along the Svir and Volga rivers as well as interior canals and lakes. Voyages typically last 8 to 13 days, with some itineraries combining land extensions to adjacent countries. Most ships deployed in this region feel different from those on other European waterways, since the vessels were built in former Iron Curtain countries and are for the most part leased. The season runs from May to October, with a higher number of departures in the summer months.