Bucharest is the 6th special city in the game.
Quest Line :
The local boss in this city is the Dictator. You can fight him once every 30 minutes (which may be skipped by spending 15 gold). Winning a fight rewards you with an item, which is used to advance the quest storyline.
"Visit a party" (price: 89 gold, reward: 180 mojo + 1 random girl)