Pula, Croatia is the largest city in Istria, and has a population of approximately 59,000 people. The majority of citizens are Croats with 71 percent as of 2001. The climate of Porec is extremely mild with low humidity. The city is known for wine making, fishing, shipbuilding, and tourism. Pula has also been Istria's administrative center since ancient Roman times. Among the sites in Pula are the surviving Roman buildings, the first-century amphitheater, locally called The Arena. There are also the first century triumphal arch, the Arch of the Sergii, and the temple Rome and Augustus built in the first century A.D. Tourists can still walk through old, narrow streets lined with medieval and renaissance buildings, on ancient Roman pave stones.