Vulture has some behind-the-scenes at Saturday Night Live insight. This is a feature on how the many sets are built for the show. According to designer Joe DeTullio, this week has been less impossible than most.

“We’ve built a lot of castles over the years,” he says. Castles are nothing compared to, say, the exploding whale built for a show in May. (“I was really worried about that one,” says Raywood. “There was going to be guts flying all over the place. But it worked out.”)