So I was over in Halifax NS before my vacation picking up passports (stupid PEI doesn't have a passport office) and while there my wife and I hung out with an old friend for the afternoon and he took us to a climbing gym he goes to all the time. It's a smallish commercial space with large ceilings in an industrial strip mall and just has walls with plywaood and climbing holds all over it. They even built a "cave" and outcroppings for some overhead climbing.
It was a blast and now we think we might build ourselves a climbing gym/workshop in our house. We always were intending to building an outbuilding/workshop at some point and now we think we'll make it bigger and add a couple climbing walls too!