Tretogor is the capital of Redania since the King Vestibor the Proud. The Royal court is located here. The city was built on elven foundations, just three hundred miles from Oxenfurt and three days from Anchor by horse. Paradoxically, although Redania is a powerful kingdom, the city itself is relatively a small castle, outside the stately royal palace and government building not having much of interest to show.
In third game Tretogor is mentioned several times. During the quest, Following the Thread, Lambert tells Geralt that former bandit Selyse opened a brothel she named, The Black Lily, in the city favoured by noblemen and courtiers but also adds that non-humans are not welcomed there.