Fodor's Expert Review Bob's Donuts

Polk Street's legendary 24-hour doughnut shop has been a neighborhood anchor since the 1960s. It's a Bay Area favorite for good reason—the homemade doughnuts, whether an apple fritter or classic raised maple, are always excellent, at 10 am or 10 pm. If you're particularly ambitious and hungry, give "Bob's Challenge" a go; if you eat one giant doughnut (truly giant) in three minutes, you get a T-shirt and induction in Bob's Hall of Fame.