At the former 19th-century steel mill now known as Gowanus Ballroom, a group show features subversive works of sacred art. As Kerri Allen writes on the blog, “Curiosity seems to be the central motif. You can buy a grilled cheese sandwich from a surly carnival worker…and then turn your gaze to a giant cluster of metal contraptions in the sky. Meanwhile, a lineup of live performances ranging from elegant fire shows to seven-piece bands keeps the spirit moving.” This is the last weekend to see “The Architecture of Devotion,” open 6pm-12am Saturday and Sunday. Admission is $10.