workers (documented and undocumented) and refugees. There are many economic migrants and refugees from African countries, primarily Eritrea and Sudan, located in the southern part of the city. Neighborhoods Tel Aviv is divided into nine districts that have formed naturally over the city's short history. The oldest of these is Jaffa, the ancient port city out of which Tel Aviv grew. This area is traditionally made up demographically of a greater percentage of Arabs, but recent gentrification is replacing them with a young professional and artist population. Similar processes are occurring in nearby Neve Tzedek, the original Jewish neighborhood outside of Jaffa. Ramat Aviv, a district in the northern part of the city that is largely made up of luxury apartments and includes Tel Aviv University, is currently undergoing extensive expansion and is set to absorb the beachfront property of Sde Dov Airport after its decommissioning. The area known as HaKirya is the Israel Defense Forces (IDF) headquarters and a large military base. Moreover, in the past few years, Rothschild Boulevard which is beginning in Neve Tzedek has become an attraction for tourists, businesses and startups. It features a wide, tree-lined central strip with pedestrian and bike lanes. Historically, there was a demographic split between the Ashkenazi northern side of the city, including the district of Ramat Aviv, and the southern, more Sephardi and Mizrahi neighborhoods including Neve Tzedek and Florentin. Since the 1980s, major restoration and gentrification projects have been implemented in southern Tel Aviv. Baruch Yoscovitz, city planner for Tel Aviv beginning in 2001, reworked old British plans for the Florentin neighborhood from the 1920s, adding green areas, pedestrian malls, and housing. The municipality invested two million shekels in the project. The goal was to make Florentin the Soho of Tel Aviv, and attract artists and young professionals to the neighborhood. Indeed, street artists, such as Dede, installation artists such as Sigalit Landau, and many others made the upbeat neighborhood their home base. Florentin is now known as a hip, "cool" place to be in Tel Aviv with coffeehouses, markets, bars, galleries and parties. Cityscape Architecture Tel Aviv is home to different architectural styles that represent influential periods in its history. The early architecture of Tel Aviv consisted largely of European-style single-storey houses with red-tiled roofs. Neve Tzedek, the first neighbourhood to be built outside of Jaffa, is characterised by two-storey sandstone buildings. By the 1920s, a new