I have an ongoing project to make posts for mental_floss articles I wrote way back when that I do not have an archive for. Here's another one. Since this was written in2014, the festival dates won't be accurate, but maybe the website links will be.
It’s summertime, and there are celebrations going on all over the U.S., often centered around something that makes a community unique. Perhaps you’ll find an event that’s worth a road trip for you, in this list I wrote for Mental Floss.