If museums are on your list of things to see in Gero Onsen, then you might want to head to Gero Onsen Gassho Village. If you want to see more of the museums in Gero Onsen, you can easily walk to Onsen Museum.
Kaeru Shrine is just one of the landmarks located 0.4 mi (0.6 km) from central Gero Onsen, so you might want to stop by for a few pics during your trip.