In 1943, deep dish pizza was created in the Windy City of Chicago. The Windy City actually got its nickname from long-winded politicians, not the weather. The first color TV was purchased by the Chicago Tribune from television maker Zenith! Chicago is home to the largest building in America (excluding The Pentagon), The Merchandise Mart, with 90 acres of floor space. Our home-made sausage and meatballs are made fresh from a super secret Chicago recipe. The Chicago River is the only river in the world that flows backwards. Chicago is the home to the world's first mail-order business - Montgomery Ward. The national tradition of organ music at baseball games began in 1942 when the Chicago Cubs installed one at Wrigley Field. In 1993, Oregano's opened the first pizza bistro in Arizona.