A large excavator fell over during the demolition of the Ford Auditorium in Detroit.
A minor injury to the operator was reported by the Associated Press.
You can see photos at the Detroit Free Press. And Jeff Wattrick at MLive received photos from his former co-workers who were gawking out their window at the Renaissance Center.
Ford Auditorium's date with the wrecking ball has been set for Friday afternoon, according to a release from the city of Detroit.
Earlier this week, workers removed the pipe organ from the 55-year-old structure with a then-undetermined demolition date. Mayor Dave Bing will make some brief remarks at 11 a.m. before demolition begins.