1926 -- The giant dirigible Los Angeles floats above the city of Detroit. Below is Washington Boulevard, with the Book-Cadillac Hotel on the right and the New Book Tower to the left. Photo from The New York Times Photo Archives.
Zeppelin, England 1931 Blimps were invented by the Germans during WWI and they were used to carry weapons. I think they decided to use them just for the Super Bowl when a few of them got shot down pretty quickly.