Willis Tower: References & Edit History
More Articles On This Topic
Article Contributors
Primary Contributors
-
Lynn J. Osmond
Lynn Osmond assumed the position of President and CEO of the Chicago Architecture Foundation (CAF) in 1996. She is responsible for overseeing CAF’s comprehensive program of architecture tours, exhibitions, public programs (including lectures and special events), and youth and adult education programs. With her strong leadership in organizational development, CAF has realized 300 percent in organizational growth, has consistently ranked among the top 10 Chicago cultural institutions, and has grown its audience to more than half a million visitors. CAF’s docent program has also thrived during her tenure, becoming internationally recognized as the leading program of its kind in the world. She also spearheaded the launch of the Association of Architecture Organizations and the Architecture + Design Education Network, which now has more than 125 members.
-
The Editors of Encyclopaedia Britannica
Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree. They write new content and verify and edit content received from contributors.
Other Contributors
- J. M. Gaffney
Other Encyclopedia Britannica Contributors
Article History
| Type | Description | Contributor | Date |
|---|---|---|---|
| Invalidated site: Council on Tall Buildings and Urban Habitat - Bringing an Icon into the Future: Willis Tower (PDF). | Jul 01, 2026 | ||
| Add new Web site: CNN US - Willis Tower Fast Facts. | Oct 29, 2025 | ||
| Add new Web site: Council on Tall Buildings and Urban Habitat - Bringing an Icon into the Future: Willis Tower (PDF). | May 20, 2025 | ||
| Article revised to mention the 2017–22 renovation work. | Nov 22, 2024 | ||
| Add new Web site: IOPscience - IOP Conference Series: Earth and Environmental Science - Generative Design Process for Alternative Creation of Architectural Design: Application of Willis Tower Shading Analysis Case Study. | Oct 30, 2024 | ||
| Add new Web site: Skydeck - Willis Tower. | Aug 23, 2024 | ||
| Link added. | Jun 26, 2024 | ||
| Add new Web site: Skydeck - Willis Tower. | Feb 24, 2024 | ||
| Add new Web site: Art in Context - Willis Tower � Taking a Look at the Sears Tower in Chicago. | Oct 13, 2023 | ||
| Add new Web site: Skydeck - Willis Tower. | Mar 06, 2020 | ||
| Add new Web site: Skydeck Chicago - The Tower - Tower by Numbers. | Mar 06, 2020 | ||
| Add new Web site: Chicago Architecture Center - Willis Tower. | Mar 06, 2020 | ||
| Noted that the uneven arrangement of cigarettes pushed out of a pack served as inspiration for the structure's design and how this arrangement disrupts the stress of the wind upon the structure. | Mar 24, 2017 | ||
| Article revised and updated. | Sep 30, 2016 | ||
| Changed the word "comprise" to "compose." |
|
Apr 07, 2015 | |
| Article handled to change the name from Sears Tower to Willis Tower. | Jul 16, 2009 | ||
| Added mention of the Skydeck and the opening of the Ledge. | Jul 08, 2009 | ||
| Article updated to include Willis Group Holdings' announcement that Sears Tower would be renamed Willis Tower. | Mar 13, 2009 | ||
| Added new Web site: Official Site of Sears Towers, Chicago, United States. | Oct 20, 2008 | ||
| Added new Web site: Randell E. Krause - Sears Tower, Chicago, United States. | Oct 20, 2008 | ||
| Media added. | Jul 13, 2007 | ||
| Article revised. | Mar 28, 2003 | ||
| Article revised. | Mar 06, 2003 | ||
| Article revised. | Nov 01, 2000 | ||
| Article added to new online database. | Jul 20, 1998 |
View Changes:
Article History
Revised:
By: