Pizza seems so easy, but when it’s done well, you can see just how precise an art form it can be. And specifically it’s the simplicity of Pizzeria Vetri’s pies — the perfectly chewy fermented dough topped with fresh ingredients — that makes them so special. The anise flavor of the fennel sausage pie is amplified by acidity of tomato sauce and the mild funk of the mozzarella and Parmesan cheeses. Even the classic margherita is strong enough in its simplicity to satisfy any pizza cravings. And both locations — in Rittenhouse, in addition to the Art Museum – are perfect if you want a slice or two to go.