Twitter's headquarters in San Francisco.

Twitter's rooftop garden has city views, greenery and outdoor couches. (David Paul Morris/Bloomberg / October 7, 2013)

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SAN FRANCISCO -- Twitter planted its headquarters in a historic Art Deco building, bringing its fine-feathered aesthetic and tech riches to a blighted stretch of Market Street in San Francisco.

The crown jewel of the design is the company's rooftop garden decked out with city views, greenery, outdoor couches and -- at one point last week -- Tom Hanks playing corn hole.

Twitter spends about $100,000 a month renting the deck so that staffers can have exclusive use of the outdoor paradise, according to documents it filed with the Securities and Exchange Commission ahead of its hotly anticipated initial public stock offering.

in a historic Art Deco building on a blighted stretch of Market Street in San Francisco. - See more at: http://latimesblogs.latimes.com/technology/2011/12/twitters-fly-redesign-looks-to-be-faster-simpler-and-more-personal.html#sthash.iyj3vqCi.dpuf
in a historic Art Deco building on a blighted stretch of Market Street in San Francisco. - See more at: http://latimesblogs.latimes.com/technology/2011/12/twitters-fly-redesign-looks-to-be-faster-simpler-and-more-personal.html#sthash.iyj3vqCi.dpuare in cording to the company’s IPO filing, the company got a good deal on rent in its Art Deco headquarters at 1355 Market St. where it occupies about 300,000 square feet, about $35 a square foot for the initial lease for 215,000 square feet.

And Twitter isn't done yet bringing up the hip quotient in the neighborhood. It's eyeing a neighboring building to double its footprint.

Jack Dorsey, Twitter’s co-founder, also moved his new company Square into the hood. Square is now about a block away.

Obsessed with city maps and urban grids, Dorsey has organized Square's new digs like a city.

Conference rooms are named in alphabetical order after San Francisco city streets. Intersections are based on which floor they are on, such as “Haight and 6thaccording to Wired. All of Square's neighborhoods meet at a crossroads: the coffee bar. It’s staffed by full-time baristas who pull double duty as product testers.

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