All international and regional buses arrive in and depart from the main bus station (Autobuska stanica), which is situated beside the green market in Tvrđava, not far from the fortress itself. Although not shaded or sheltered much, there are lots of useful amenities for passengers: kiosk for phone credit/snacks/drinks, a couple of cafes/restaurants, ATM, exchange office, phone booth and wardrobe. An onward bus is not necessary for getting to the centre, just meander through the green market until you see the fortress walls (immediately south-east), then cross the bridge into the main square where you'll see the tall and very Yugoslavian 'Ambassador hotel'.