Photo by Obi Okolo. There’s a new spot to check out in the Union Market area. The Twelve contains three sections: a lounge area for workshops and conversations, a storefront, and a rotating art gallery. But don’t call it a store. Or a gallery. Or a lounge. The Twelve is a “year-long art/retail/gathering experiment,” according to its website, and will only be open for 12 months, says Amira El-Gawly, one of the co-creators and also the founder of Manifesta and St. Plant. “It’s a project, not a long-term business, and there’s a difference there,” she says of The Twelve, named fo...