Once you head west after exiting Inuyama Station’s ticket gate, you will be able to see Inuyama Castle from the front window.
Walk down the stairs to your right and proceed along with the roundabout. You will come to the Inyama Station West Intersection. Cross the intersection and walk straight. You will see the Inuyama Castle Town once you turn right at the Honmachi Intersection. You will arrive at the base of the Shiroyama after walking through the castle town.