In which county is the botanical gardens of which, The Desert Garden Conservatory, is part ?
Huntington Library The Huntington Library, Art Collections and Botanical Gardens (or The Huntington) is a collections-based educational and research institution established by Henry E. Huntington (1850–1927) and located in Los Angeles County in San Marino, California, on the western coast of the United States, and about 35 miles northeast of the Pacific Ocean. In addition to the library, the institution houses an extensive art collection with a focus in 18th and 19th-century European art and 17th to mid-20th-century American art. The property also includes approximately 120 acres of specialized botanical landscaped gardens, most notably the "Japanese Garden", the "Desert Garden", and the "Chinese Garden" (Liu Fang Yuan).
San Marcos, California San Marcos is a city in the North County region of San Diego County in the U.S. state of California. As of the 2010 census, the city's population was 83,781. It is the site of California State University San Marcos. The city is bordered by Escondido to the east, Encinitas to the southwest, Carlsbad to the west, and Vista to the northwest. Lake San Marcos is an enclave, or county island, in the southwestern part of the city, within San Marcos' sphere of influence but technically an unincorporated community.