what to see and do in san diego california?
San Diego Zoo Safari Park San Diego Zoo Cabrillo National Monument Hotel del Coronado Mission San Diego de Alcalá Old Town San Diego State Historic Park Balboa Park Birch Aquarium Old Point Loma Lighthouse USS Midway
contradiction
 San Francisco @-@ based inventors made important contributions to modern media . During the 1870s , Eadweard Muybridge began recording motion photographically and invented a zoopraxiscope with which to view his recordings . These were the first motion pictures . Then in 1927 , Philo Farnsworth 's image dissector camera tube transmitted its first image . This was the first television . 

contradiction
 There are more than 220 parks maintained by the San Francisco Recreation & Parks Department . The largest and best @-@ known city park is Golden Gate Park , which stretches from the center of the city west to the Pacific Ocean . Once covered in native grasses and sand dunes , the park was conceived in the 1860s and was created by the extensive planting of thousands of non @-@ native trees and plants . The large park is rich with cultural and natural attractions such as the Conservatory of Flowers , Japanese Tea Garden and San Francisco Botanical Garden . Lake Merced is a fresh @-@ water lake surrounded by parkland and near the San Francisco Zoo , a city @-@ owned park that houses more than 250 animal species , many of which are endangered . The only park managed by the California State Park system located principally in San Francisco , Candlestick Point was the state 's first urban recreation area . 

entailment
 San Diego County hosted more than 32 million visitors in 2012 ; collectively they spent an estimated $ 8 billion locally . The visitor industry provides employment for more than 160 @,@ 000 people . 

contradiction
 Several of San Francisco 's parks and nearly all of its beaches form part of the regional Golden Gate National Recreation Area , one of the most visited units of the National Park system in the United States with over 13 million visitors a year . Among the GGNRA 's attractions within the city are Ocean Beach , which runs along the Pacific Ocean shoreline and is frequented by a vibrant surfing community , and Baker Beach , which is located in a cove west of the Golden Gate and part of the Presidio , a former military base . Also within the Presidio is Crissy Field , a former airfield that was restored to its natural salt marsh ecosystem . The GGNRA also administers Fort Funston , Lands End , Fort Mason , and Alcatraz . The National Park Service separately administers the San Francisco Maritime National Historical Park – a fleet of historic ships and waterfront property around Aquatic Park . 

contradiction
 San Francisco was an early adopter of carsharing in America . The non profit City Carshare opened in 2001 . Zipcar closely followed . 
