Outdoor, Concrete Patio, Porch, Deck, Shrubs, and Large Patio, Porch, Deck “We didn’t treat the steel,” explains Jon. “We said, you know what, we’re going to let it rust. And the concrete block wall—you just sort  of leave it and let it age.”  Photo 4 of 11 in A Hilltop Home in British Columbia That Seems to Grow Out of a Park