CN Tower fire. Moreover, other supertall structures built between 1967 and 1976 — such as the Willis Tower (formerly the Sears Tower), the World Trade Center (until its destruction on September 11, 2001), the Fernsehturm Berlin, the Aon Center, 875 North Michigan Avenue (formerly the John Hancock Center), and First Canadian Place — also have excellent safety records, which suggests that the Ostankino Tower accident was a rare safety failure, and that the likelihood of similar events occurring at other supertall structures is extremely low. The CN Tower was originally lit at night with incandescent lights, which were removed in 1997, because
Joshua Sears Building "SEARS". The second entrance is centered on the east facade and bears many of the same features: pressed metal pediments, etc. The Sears Building was built in 1891 by Boston millionaire, philanthropist and Kirkland investor Joshua Montgomery Sears as part of the speculative land boom following Peter Kirk's proposal of building a steel producing mecca that would rival Pittsburgh on the east side of Lake Washington. The building cost $18,000 to build, at the time the most expensive being built in Kirkland outside of the steel mill itself. The bricks were pressed from local clay at Peter Kirk's own brick