This bright neighborhood restaurant, located in the historic "Fabric Row" area of Queen Village, serves a burger made with grass-fed beef from Rineer Family Farms. It features a secret burger sauce, plus cheddar, lettuce, pickles and onions on a double-sesame-seeded bun. hungrypigeon.com
Philadelphia offers an impressive array of burgers, from single-patty standbys to towering stacks made with wild boar meat, spicy pimento cheese and all kinds of secret sauces. Here are photographer Neal Santos's picks for the best burgers in Philly.