Hope this helps @worldtraveller99
Germany:
No testing or proof of vaccination required
masks required at some sites (example: indoors at Heidelberg castle, inside a pharmacy)
compared to the other countries we visited, there was more masking in general by locals/tourists (Example: wait staff at some restaurants wore masks)
France:
No testing or proof of vaccination required
we did not witness anywhere that required masks and overall low mask usage
Switzerland:
No testing or proof of vaccination required
we did not witness anywhere that required masks and overall low-medium mask usage
Swiss airlines requires masks on board