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[Introduction] [Task] [Process] [Resources] [Evaluation] [Conclusion] [Teacher Notes]
| How Tall (feet) | Location | Building(1975) |
| (1) 1,821 | Toronto, Ont | CN Tower (1975) |
| (2) 1,454 | Chicago, Ill | Sears Tower (1974) |
| (3) 1,368 | New York, NY | World Trade Center (1973) |
| (4) 1,250 | New York, NY | Empire State Building (1931) |
| (5) 1,136 | Chicago, Ill | Amoco Building (1974) |
| (6) 1,127 | Chicago, Ill | John Hancock Center (1969) |
| (7) 1,050 | Atlanta, GA | Nation's Bank Tower (1992) |
| (8) 1,046 | New York, NY | Chrysler Building (1930) |
| (9) 1,017 | Los Angeles, CA | First Interstate World Center (1989) |
| (10)1,002 | Houston, TX | Texas Commerce Tower (1981) |
| (11) 992 | Houston, TX | First Interstate Plaza (1983) |
| (12) 970 | Chicago, Ill | 311 S. Wacker (1969) |
| (13) 960 | Philadelphia, PA | One Liberty Pl. (1987) |
| (14) 954 | Seattle, WA | Columbia Seafirst Center (1985) |
| (15) 952 | Toronto, Ont | First Canadian Pl. (1979) |
| (16) 951 | Toronto, Ont | Bay/Adelaide Project (1991) |
| (17) 950 | New York, NY | American International (1932) |
| (18) 948 | Cleveland, OH | Society Center (1991) |
| (19) 939 | Dallas, TX | National Bank Plaza (1985) |
| (20) 927 | New York, NY | 40 Wall Tower (1929) |
| (21) 914 | New York, NY | Citicorp Center (1977) |
| (22) 902 | Toronto, Ont | Scotia Plaza (1988) |
| (23) 901 | Chicago, Ill | Two Prudential Plaza (1990) |
| (24) 901 | Houston, TX | Transco Tower (1983) |
| (25) 891 | Chicago, Ill | AT&T Corporate Center (1989) |
Choose at least 5 of these skyscrapers and find out as much as possible about what makes their architecture and inner structure so tall and so strong. Use the web sites on the web page skyscrapers.htm to start your investigation of these structures. If you find additional web sites that have good information, make sure to write them down and tell what you found there!