To access the antique town from the valley one can either walk the 1,5 km or alternatively use a bus shuttle from the entrance to the top of the hill. Tickets for the bus need to be purchased with the entrance ticket, and the bus operates in ‘irregular’ intervals.
You have only 2 ways to get up to the theater: 1) walk ( 2km, 30 minutes all uphill) 2)bus.This is oviously faster (1.2 euro round-trip) and less tiring. It goes up Mt. Barbaro from next to the concession area every half-hour (on the hour). You cannot drive up yourself. The trip takes about 10 minutes, the returns are prompt. Out the window are quick views of the Temple and the "city ruins" (i.e. stones in fields). Much more is said to be visible if you walk and wander. But the bus is for getting there and back.It takes about a half-hour or so to climb through the theater and city ruins so far excavated at the top. There is no antiquarium as yet.