Dog Park Design

Many of you already know that I'm studying Landscape Design, hoping to eventually specialize in dog-friendly properties.
Yes, there are things you can do to a yard that channel your dogs to leave parts of it alone, while giving the dogs (as well as their owners) a sanctuary.

I found this post on Beyond Landscape, showing a dog park from this summer's Barkitecture exhibit.
The site uses reclaimed fire hydrants, in a whimsical display.
Everything about this makes me smile.