Os Alta is the capital of Ravka. Together with Os Kervo, it is the biggest and most important city in Ravka. Furthermore, Os Alta is the political and cultural center of Ravka, being the place where the Grand Palace and the Little Palace are located.
Os Alta is the place where the rich, influential and powerful elite of the country lives. In aristocratic circles, having a winter residence in Os Alta is very popular. It is nicknamed the Dream City.
The city is divided into two parts: the outer area is similar to the small, poor villages and towns in the rest of the country, and it is inhabited by peasants. The inner part of the city, divided from the outer part by a ditch, is home to the rich and powerful of Ravka with palaces, boulevards, avenues, fountains and symmetrical gardens. In this part of the city the royal household is situated. It is called Gersky Prospect.