Silicon Wadi (Hebrew: סיליקון ואדי, lit: "Silicon Valley") is an area with a high concentration of high-tech industries in the coastal plain in Israel, similar to Silicon Valley in California, in the United States. Silicon Wadi is considered second in importance only to its Californian counterpart. The area covers much of the country, although especially high concentrations of hi-tech industry can be found in the area around Tel Aviv including small clusters around the cities of Ra'anana, Petah Tikva, Herzliya, Netanya, the academic city of Rehovot and its neighbour Rishon Le Zion. In addition, hi-tech clusters can be found in Haifa and Caesarea. More recent hi-tech establishments have been raised in Jerusalem, and in towns such as Yokneam Illit and Israel's first "private city," Airport City, near Tel Aviv.