The best thing in Germany is to seek out local festivals and go to the tents. Plenty of wine festivals in the vicinity of Frankfurt this time of year and opportunities there.
There are also a lot of outdoor music events this time of year.
This site is excellent, just need a little German to do a search:
http://www.veranstaltungen-in-deutschlan...tungen.asp
There are also a lot of outdoor music events this time of year.
This site is excellent, just need a little German to do a search:
http://www.veranstaltungen-in-deutschlan...tungen.asp