KEN LAMBERT / THE SEATTLE TIMES
Adrianna Gregoris, center, scales the roof of "The Western Oracle: We Will Tear the Roof Off The Mother, 2013," at SAM's Olympic Sculpture Park. Gregoris, from Toronto, Canada, said, "I was worried about falling at one point," adding that initially she thought the house was a real one that had sunk in a natural disaster. The interactive installation is the work of Seattle native Heather Hart and will be on display until Oct. 13. Hart learned roof building from her father.