I've never visited Metropolis, Illinois -- the Home of Superman -- but I'd like to someday. Their annual Superman Celebration is on the weekend of June 6 - 9 this year. With this being Superman's 75th anniversary year, and the opening of Man of Steel in theaters next month, this ought to be a big one. Click on the image above for more information.
The phrase "Celebrating 35 Years" in the logo refers to the number of years that Metropolis has been hosting the Superman Celebration. The original superhero himself has been around for 75, and Metropolis was declared Superman's Hometown in 1972, which was 41 years ago. Thirty-five years ago was 1978, which was also the year that the first Superman feature film starring Christopher Reeve was released.