Anaheim exists because of Disneyland. Walt Disney built his Magic Kingdom among the orange groves in 1955, and the city has been defined by it ever since. The Disneyland Resort now includes two parks — Disneyland Park and Disney's California Adventure — along with the Downtown Disney shopping and dining district.
Beyond the theme parks, Anaheim is a practical base for exploring Orange County. The beaches at Huntington Beach and Newport Beach are within easy reach, and San Diego is only a couple of hours south. Knott's Berry Farm, one of the older theme parks in California, is just up the road in Buena Park.
The city itself is mostly suburban sprawl and hotel strips, but it serves its purpose: a place to sleep between theme park days, with plenty of chain restaurants and family-friendly options along Harbor Boulevard and Katella Avenue.