Senkoji Ropeway Mountain Station is just one of the landmarks located 1.9 mi (3 km) from central Onomichi, so you might want to stop by for a few pics during your trip.
If museums are on your list of things to see in Onomichi, then you might want to head to Onomichi City Museum of Art. If you want to see more of the museums in Onomichi, you can easily walk to Shiga Naoya Former House or Onomichi Literature Museum.