The conference hotels are located in our central business district, which has perks but is by no means representative of the city. If you've perused Yelp and Google Maps but are at a loss, consider...
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1) Best fish taco: Oscar's Mexican Seafood (smoked fish recommended)
2) All around tacos: The Taco Stand
3) Over-priced delicious tacos: Puesto
4) Under-priced delicious tacos: Tijuana
1) Cool open market with good food: Liberty Public Market
2) Pizza: Isola or Buona Forchetta
3) Seafood: El Pescador Fish Market
4) Korean BBQ, Dumplings: Go to Convoy Street
Recommended: Most neighborhoods surrounding Balboa Park (South Park, North Park, Hillcrest, and Bankers Hill. Note that thriving blocks of restaurants are often disconnected from one another.
Not recommended: Old Town
Half day activity:
Balboa Park (zoo obviously)
Full day activities:
1) Safari Park
2) Legoland
3) Tijuana
South to North:
1) A serene beach: Coronado
2) Hippie beach: Ocean Beach
3) Hipster beach: Mission Beach
4) College beach: Pacific Beach
5) Best sunsets and cliff walks: Windansea and La Jolla
Half day options:
1) Torrey Pines State Reserve
2) Mission Trails Regional Park
Full day options:
1) Black Mountain Open Space Park
2) Many others.