Question: Where is the headquarters of the video game publisher that is owned by the same company that owns the "Quake" series?

Context articles: List of video game publishers
List of Square Enix Europe games
Aksys Games
Bethesda Softworks
Enemy Territory: Quake Wars
Quake Champions
ZeniMax Media
Rising Star Games
Working Designs
Quake 4

This is a list of video game publisher companies.
 A video game publisher may specialize in only publishing games for developers, or may either have in-house development studios or own subsidiary development companies.
 Some developers may publish their games themselves.
 This list includes both active and no longer active (defunct ) companies.
 Active publishers are either run independently or as a subsidiary of another company.
Square Enix Europe is a British video game publisher which is wholly owned by Square Enix, a Japanese video game company.
 Square Enix acquired game publisher Eidos plc on 22 April 2009, which was then merged with Square Enix's European publishing wing and reorganized as Square Enix Europe.
 This list includes retail, downloadable, and mobile games published by Square Enix Europe since its formation in April 2009.
 Prior to its purchase, Eidos plc was the holding company for the Eidos group of companies, including publisher Eidos Interactive and development studios such as Crystal Dynamics, IO Interactive, Beautiful Game Studios, and Eidos Montréal.
 The majority of the titles published by Square Enix Europe have been developed by those former subsidiaries or by newer Square Enix subsidiaries such as Square Enix Montréal.
 Additionally, most of the titles belong to franchises previously published by Eidos, such as the "Tomb Raider", "Hitman", "Deus Ex", and "Championship Manager" franchises.
Aksys Games Localization, Inc. is a video game publisher that specializes in translating and localizing Japanese video games for English-speaking markets.
 It was founded by Akibo Shieh in 2006.
 Some of its clients include Namco Bandai Games, Xseed Games, and Atlus USA.
 Aksys Games is best known for its involvement in the "Guilty Gear" series.
 It has become a full-fledged game publisher with the announcement of "Eagle Eye Golf" for PlayStation 2, and has expressed a desire to publish for all current platforms from Microsoft, Nintendo, and Sony.
Bethesda Softworks LLC is an American video game publisher based in Rockville, Maryland.
 The company was founded by Christopher Weaver in 1986 as a division of Media Technology Limited, and in 1999 became a subsidiary of ZeniMax Media.
 In its first fifteen years, it was a video game developer and self-published its titles.
 In 2001, Bethesda spun off its own in-house development team into Bethesda Game Studios, and Bethesda Softworks became a publisher only.
 It currently also publishes games by ZeniMax Online Studios, id Software, Arkane Studios, MachineGames, Tango Gameworks and BattleCry Studios.
Enemy Territory: Quake Wars is a first-person shooter video game developed by Splash Damage and published by Activision for Microsoft Windows, Linux, Mac OS X, PlayStation 3 and Xbox 360.
 The prequel to "Quake II", "Quake Wars" is set in the same science fiction universe as "Quake II" and "Quake 4", with a minimal back-story serving as a prequel to "Quake II".
 It is the second multiplayer-focused game in the "Quake" series after "Quake III Arena".
Quake Champions is an upcoming first-person shooter video game developed by id Software and published by Bethesda Softworks, as part of the "Quake" series of multiplayer shooters.
 "Quake Champions" will be the first main entry in the "Quake" series since 2005's "Quake 4."
 The game is due for release on Microsoft Windows in 2017.
ZeniMax Media Inc. is an American media company.
 The company is known for owning Arkane Studios (developer of "Dishonored" and "Prey"), BattleCry Studios (developer of "BattleCry"), id Software (developer of the "Doom" and "Quake" series, and "Rage"), MachineGames (developer of ""), Tango Gameworks (developer of "The Evil Within"), Bethesda Softworks with its Bethesda Game Studios (developer of "The Elder Scrolls" and "Fallout" series) and ZeniMax Online Studios (developer of "The Elder Scrolls Online").
 ZeniMax is headquartered in Rockville, Maryland, with offices in Asia / Asia Pacific, Australia and Europe (Germany, France, Benelux).
Rising Star Games is an English video game publisher formed in 2004 as a joint business venture between Scandinavian distributor Bergsala and Japanese video game publisher and content developer Intergrow.
 The company is based in Hitchin, Hertfordshire, England, and in North America in California, United States.
Working Designs was an American video game publisher that specialized in the localization of Japanese role-playing video games, strategy video games and top-down shooters for various platforms.
 Though the company had published many 'cult hits', it was known best to fans as the long-time exclusive US publisher of the "Lunar series".
 The company was one of the few game publishers that attempted to bridge the cultural gap between the Japanese and American video game industries during the 1990s with an eclectic selection of releases from various genres, and was also one of the earliest American publishers to make use of the CD-ROM format for full, spoken English dialogue in their products at a time when voice acting was not a common feature in most mainstream games.
Quake 4 is a military science fiction first-person shooter video game, the fourth title in the "Quake" series.
 The game was developed by Raven Software and published by Activision.
 Raven Software collaborated with id Software, the creators and developers of preceding "Quake" games.
 id Software supervised the development of the game as well as providing the id Tech 4 engine upon which it was built.
 "Quake 4" went gold in early October 2005 and was released on 18 October 2005 for Microsoft Windows and later for Linux, Xbox 360 and OS X.
 A special DVD Collectors Edition was released, including promotional material and the game "Quake II" with its expansions, "The Reckoning" and "Ground Zero".
 The Xbox 360 version of "Quake 4" is based on the Special Collectors Edition, and includes "Quake II".
 On 4 August 2011 the game was made available through Steam.