When our Barkley was diagnosed with this, we started feeding him homemade dog food and taking him on walks and to the farm as much as possible. He was happy as long as Mr. Mercat was there.
The rest of the places, they're just happy to be with their owners.
My first Irish Setter LOVED going to my grandparents farm. She'd sniff out one field, then another, then explore the pond, then around the barn and shop. Then start all over again.
She REALLY liked doing all that, when I was outside with her.
When the arthritis started getting bad, she still loved for me to take her swimming.
Did you ever read the story of Schoep and John?