Located on the west side of the street, City Hall is run by Disneyland's Guest Relations department. Here you can have any and all of your Disneyland-related questions answered, as well as many unrelated to Disneyland.
Guest Relations hosts and hostesses can help you in getting resources for local transportation, lodging, attractions, and much more. Think of them as your in-park concierge.
City Hall hosts and hostesses can also provide you with maps in English and a variety of other languages, entertainment schedules, special assistance passes for guests with disabilities, and directions to attractions outside the Resort.
There is even a braille version of the park map here.
You can also inquire about Disneyland's and California Adventure's many guided tours and special events.