Syldavia is a monarchy, ruled at the time of "King Ottokar's Sceptre" by King Muskar XII. The capital is Klow, formerly Zileheroum, located at the confluence of the Moltus and Vladir Rivers (after Prague, which is on the Vltava River). Other cities named in the books are Niedzdrow, Istov, Dbrnouk, Douma, Tesznik, and Zlip. The population of Syldavia is 642,000 with 122,000 living in Klow, suggesting the country is similar in size to Montenegro. The national airline is Syldair and the official currency is the khôr.