Cycling in a foreign city where you don't know the rules of the road and how the drivers operate? That's kinda asking for trouble. Maybe in the countryside, but if you are thinking of roaming the streets of the city proper as a tourist, I highly advise against it. You'll end up probably getting into an accident or altercation with the local drivers. Best thing to do is to rent a car in the city if you just want to cruise around, or cycle outside the city proper, where there are less cars (but could still be dangerous).