If you're looking for something cool to do on a brilliant fall day, the Guggenheim is free all day

So wander up 5th Ave., and help the Guggenheim celebrate it's 50th anniversary today. Admission is free all day to help commemorate the big 5-0 birthday party and you can enjoy a New York landmark and architectural wonder all at the same time. The New York Daily News lists 50 reasons why the Guggenheim is such a wonder besides being designed by Frank Lloyd Wright.

Happy 50th Guggenheim, it's been a wonderous first 50 and here's to 100 more.