Title: Google Ads
Content:  Sales and support for Google's Ads division in the United States is based in Mountain View, California, with major secondary offices in Hyderabad, Dublin, Singapore, Ann Arbor and New York City. The third-largest US facility is the Googleplex, Google's headquarters, which is located in Mountain View, California. Google AdWords engineering is based at the Googleplex, with major secondary offices in Los Angeles and New York.
Title: Google
Content:  and smartphone applications and programs. Other office locations in the U.S. include Atlanta, Georgia; Austin, Texas; Boulder, Colorado; Cambridge, Massachusetts; San Francisco, California; Seattle, Washington; Kirkland, Washington; Birmingham, Michigan; Reston, Virginia, Washington, D.C., and Madison, Wisconsin. It also has product research and development operations in cities around the world, namely Sydney (birthplace location of Google Maps) and London (part of Android development). In November 2013, Google announced plans for a new London headquarter, a 1 million square foot office able to accommodate 4,500 employees. Recognized as one of the biggest ever commercial property acquisitions at the time of the deal's announcement in January, Google submitted plans for the new headquarter to the Camden Council in June 
Title: Google
Content:   Google's headquarters in Mountain View, California is referred to as "the Googleplex", a play on words on the number googolplex and the headquarters itself being a complex of buildings. Internationally, Google has over 78 offices in more than 50 countries. In 2006, Google moved into about 300000 sqft of office space at 111 Eighth Avenue in Manhattan, New York City. The office was designed and built specially for Google, and houses its largest advertising sales team. In 2010, Google bought the building housing the headquarter, in a deal that valued the property at around $1.9 billion. In March 2018, Google's parent company Alphabet bought the nearby Chelsea Market building for $2.4 billion. The sale is touted 
Title: Googleplex
Content:  The Googleplex is the corporate headquarters complex of Google and its parent company, Alphabet Inc. It is located at 1600 Amphitheatre Parkway in Mountain View, California. The original complex, with 2 e6ft2 of office space, is the company's second largest square footage assemblage of Google buildings, after Google's 111 Eighth Avenue building in New York City, which the company bought in 2010. "Googleplex" is a portmanteau of Google and complex (meaning a complex of buildings) and a reference to googolplex, the name given to the large number 10(10 100), or 10googol.
Title: Google
Content:  In May 2015, Google announced its intention to create its own campus in Hyderabad, India. The new campus, reported to be the company's largest outside the United States, will accommodate 13,000 employees. Google's Global Offices sum a total of 85 Locations worldwide, with 32 offices in North America, 3 of them in Canada and 29 in United States Territory, California being the state with the most Google's offices with 9 in total including the Googleplex. In the Latin America Region Google counts with 6 offices, in Europe 24 (3 of them in UK), The Asia Pacific region counts with 18 offices principally in India and China, and the Africa Middle East region counts 5 offices.
Title: Goldman Sachs
Content:  In 1957, the company's headquarters were relocated to 20 Broad Street, New York City. Goldman Sachs's global headquarters is now at 200 West Street, New York City, and the company has major offices and regional headquarters in London, Warsaw, Bangalore, Hong Kong, Tokyo and Salt Lake City. The Bangalore office, inaugurated among much fanfare in 2019, was the third-largest global office for Goldman Sachs.
Title: Google
Content:  one of the most expensive real estate transactions for a single building in the history of New York. In November 2018, Google announced its plan to expand its New York City office to a capacity of 12,000 employees. The same December, it was announced that a $1 billion, 1,700,000 ft2 headquarters for Google would be built in Manhattan's Hudson Square neighborhood. Called Google Hudson Square, the new campus is projected to more than double the number of Google employees working in New York City. By late 2006, Google established a new headquarters for its AdWords division in Ann Arbor, Michigan. In November 2006, Google opened offices on Carnegie Mellon's campus in Pittsburgh, focusing on shopping-related advertisement 
Title: History of Google
Content:  Excite's venture capitalists, talked the duo down to $750,000, but Bell still rejected it. In March 1999, the company moved into offices at 165 University Avenue in Palo Alto, home to several other noted Silicon Valley technology startups. After quickly outgrowing two other sites, the company leased a complex of buildings in Mountain View at 1600 Amphitheatre Parkway from Silicon Graphics (SGI) in 2003. The company has remained at this location ever since, and the complex has since become known as the Googleplex (a play on the word googolplex, a number that is equal to 1 followed by a googol of zeros). In 2006, Google bought the property from SGI for US$319 million.
Title: Google
Content:  In March 1999, the company moved its offices to Palo Alto, California, which is home to several prominent Silicon Valley technology start-ups. The next year, Google began selling advertisements associated with search keywords against Page and Brin's initial opposition toward an advertising-funded search engine. To maintain an uncluttered page design, advertisements were solely text-based. In June 2000, it was announced that Google would become the default search engine provider for Yahoo!, one of the most popular websites at the time, replacing Inktomi.  In 2003, after outgrowing two other locations, the company leased an office complex from Silicon Graphics, at 1600 Amphitheatre Parkway in Mountain View, California. The complex became known as the Googleplex, a play 
Title: Google for Startups
Content: Campus London ; Campus Tel Aviv ; Campus Madrid ; Campus Seoul ; Campus Warsaw ; Campus Sāo Paulo ; Campus Tokyo As of 2019, its Campuses are located in 7 different cities spanning across Europe, Asia, and South America:

Question: where is the main headquarters of google?
Answer: California.