New England has to be the queen of places with these types of festivals. They are put on by every small town and cities, celebrating all kinds of things. We have lilac festivals, strawberry festivals, blueberry festivals, oyster festivals, harvest festivals, and festivals celebrating various historic time periods. There is a colonial type festival that I remembered going to as a child, at the Old Grist Mill in Sudbury (I've posted pictures of this place). About 11-12 years ago, I was out riding with my friend and we happened on this same festival, in September. So, many of these things have been going on for years.
2015 Trek Silque SSL
Specialized Oura
2011 Guru Praemio
Specialized Oura
2017 Specialized Ariel Sport