Switchboard is also a good mix between a map and a phone book. You can put in an address and then look at business that are close to that address. For example, If you are staying in a hotel in Dallas you could put in the address of your hotel, then see what restaurants are close to the hotel. It doesn't just limit you to restaurants but a wide variety of business categories. The yellow pages on the Internet.
Business listings only.
They have over 11 million listings.