- Things to Do in San Diego - San Diego Attractions - TripAdvisor
- Lots of good, reviewed suggestions on what to do in San Diego at the tripadvisor.com site.
- San Diego Activities & Attractions - San Diego Zoo, SeaWorld, LEGOLAND
- "Official" San Diego visitors site?
- San Diego travel guide - Wikitravel
- Nice online guide to the city. Gives good overview of activities, locations, layout of the city.
- Day Trips From San Diego Things To Do
- Day trips, Google ads intensive site :) Look who's talking...
- 25 Fun & Free Things to Do in San Diego - SanDiego.org
- Nice list of free things to do in San Diego.