Aon Center (Chicago) the world headquarters of Aon and Amoco. Aon's US operations are still headquartered here. The building is also the co-headquarters of Kraft Heinz. The Standard Oil Building was constructed as the new headquarters of the Standard Oil Company of Indiana, which had previously been housed at South Michigan Avenue and East 9th Street. When it was completed in 1973, it was the tallest building in Chicago and the fourth-tallest in the world, earning it the nickname "Big Stan". (A year later, the Sears Tower took the title as Chicago's and world's tallest.) The building employs a tubular steel-framed structural system
Tower Life Building Tower Life Building The Tower Life Building is a landmark and historic building in Downtown San Antonio, Texas, USA. Construction of the tower began in 1927 and the building rises 403 feet (123 meters) and has 30 floors. The building, which opened in 1929, was originally named the Smith-Young Tower and is the central component of a partially completed development called the Bowen Island Skyscrapers. The eight sided, neo-gothic brick and terra-cotta tower (complete with gargoyles) was designed by noted local architectural firm Ayres & Ayres (Atlee & Robert M. Ayres). The building also housed San Antonio's first Sears, Roebuck