 Haifa has developed in tiers , from the lower to the upper city on the Carmel . The oldest neighborhood in the modern Haifa is Wadi Salib , the Old City center near the port , which has been <unk> by a major road and razed in part to make way for government buildings . Wadi Salib stretches across to Wadi Nisnas , the center of Arab life in Haifa today . In the 19th century , under Ottoman rule , the German Colony was built , providing the first model of urban planning in Haifa . Some of the buildings have been restored and the colony has turned into a center of Haifa nightlife . 
