In general there are many European cities that are super easy to reach from Frankfurt, either by train or plane. Some of our favorites include Paris (easy train ride), Amsterdam, Munich, Salzburg, Heidelberg, London, Edinburgh, Prague and many more. Feel free to reach out if you have any questions or for some travel tips.
One of the first trips we took together was going to the Oktoberfest. This year the "Wiesn" takes place from September 20th until October 5th. It really is a once in a lifetime experience while you're here. If you have any questions about it or need some advice, please let us know. We're happy to help.
Bensheim is very close to the venue and a cute town for a little stroll or to get some coffee and cake in the afternoon. There are also some nice areas to walk close by like the Kirchberghäusschen or the Fürstenlager.
The Felsenmeer (or sea of rocks) is a sight that is very close to the location and might be a fun thing to do, if you want to bridge over some spare time. It's great with kids as you can climb up and down the rocks, but also if you want to move your body a little.