8. David Azrieli & family

•  Net Worth: $3.1 B                                                                      
•  Source of Wealth: Shopping malls                                                                      
•  Citizen: Canada
•  Age: 91

David Azrieli survived the Holocaust and has built a real estate empire that spans North America and Israel. He heads two companies: the Azrieli Group, which went public on the Tel Aviv Stock Exchange in 2010 and sported a recent $3 billion market capitalization, and Montreal-based Canpro Investments, which is privately held. He is involved in building business centers, shopping malls and high-tech buildings mostly in Israel and Canada. His construction of three skyscraper in Tel Aviv is known to be of unique kind in Middle East.