Architecture of Chicago a new structural system of framed tubes in skyscraper design and construction. The first building to apply the tube-frame construction was the DeWitt-Chestnut Apartment Building which Khan designed and was completed in Chicago by 1966. This laid the foundations for the tube structures of many other later skyscrapers, including his own constructions of the John Hancock Center and Willis Tower (then named the Sears Tower) in Chicago and can be seen in the construction of the World Trade Center, Petronas Towers, Jin Mao Building, and most other supertall skyscrapers since the 1960s. Willis Tower would be the world's tallest building
Formerly Known that Christian hip-hop is not lame." Hill considered "Let There be Light", featuring Lecrae, a personal favorite. Wildes listed "Fools Gold", featuring Sho Baraka and Swoope, and "Michael Jackson", featuring Thi'sl, Rich Perez, R-Swift, and Bubba Watson, as the two songs which he liked the best. "Michael Jackson" sampled a line from Kanye West and was based around the concept of Christians being former sinners who were "bad real bad Michael Jackson". Wildes noted the humorous intent of the appearance of golfer Bubba Watson and stated that it "closes out a fine project". Formerly Known Formerly Known is the second