Question: Where is the head office of the agency that designed the Tour Triangle?

full_context: Document 1: Marks Barfield: Marks Barfield Architects is a London-based architectural firm founded by husband and wife David Marks and Julia Barfield. Their work has included the London Eye, the treetop walkway in Kew Gardens and the i360 observation tower in Brighton, England. In 2012 they were hired to design a six-mile rainforest canopy walkway for the Amazon Charitable Trust.
Document 2: Su Rogers: Susan Jane Rogers, known as Su Rogers ("née" Brumwell, born 22 February 1939) is a British architect and educator. She was a co-founder and partner in Team 4, and a partner in Colquhoun, Miller and Partners, which became John Miller and Partners in 1990. Rogers is perhaps best known for her work on the Pompidou Centre in the 1970's, and the concept Zip-Up House in the 1960's. She was also the architect in two commissions from her parents, namely Creek Vean (while partner at Team 4) and Pillwood House (while partner at Colquhoun, Miller and Partners), which are now both grade II* listed buildings.
Document 3: Tour Triangle: Tour Triangle, also known as "Projet Triangle", or simply "Triangle", is a skyscraper to be built in the exhibition site Parc des Expositions de la Porte de Versailles in Paris, France. Designed by the Swiss agency Herzog & de Meuron, it will take the shape of a 180 m tall glass pyramid with trapezoid base, wide from one side and narrow from another. It will be the only tall building built in central Paris since the 1973 Montparnasse tower.
Document 4: Die Pyramide: Die Pyramide ("The Pyramid") is a high-rise building built in 1994/95 and located in the Berlin region of Marzahn-Hellersdorf, district of Marzahn, at the Rhinstraße / Landsberger Allee intersection. The office building and adjacent outbuildings have a combined floor space of 43,800 square metres. Die Pyramide was built by the Fundus-Gruppe real estate company of Düren and cost approximately €145 million to build. The official completion date was 17 January 1995. At a height of 100 meters, it is the tallest building in the suburb.
Document 5: Tour Les Poissons: Tour Les Poissons is a 42-storey, 129.5 m skyscraper completed in 1970 in Courbevoie, near La Défense business district, west of Paris, France. In 2006, the spire, a 22 m cylindrical concrete barometer that glowed, green or blue indicating atmospheric pressure, was removed from the roof.
Document 6: Hélène Binet: Hélène Binet (born 1959) is a Swiss-French architectural photographer based in London, who is also one of the leading architectural photographers in the world. She is most known for her work with architects Daniel Libeskind, Peter Zumthor and Zaha Hadid, and has published books on works of several architects.
Document 7: Boutique Monaco: Boutique Monaco is a 117-metre, 27-storey residential skyscraper in the ward of Seocho-gu in Seoul. The working title of this building was "Missing Matrix"; it was designed by architect Minsuk Cho, and has 172 units. It was the recipient of the 2008 Silver Emporis Skyscraper Award, beating the much taller 101-storey Shanghai World Financial Center.
Document 8: Janes &amp; Leo: Janes & Leo was the New York-based architectural firm of Elisha Harris Janes and Richard Leopold Leo (1871/72 — 26 September 1911). From 1898 to 1911, the firm designed and built numerous Beaux-Arts residential structures in New York City, both richly detailed row houses and luxury apartment blocks during the building boom that constructed Manhattan's Upper West Side. Though neither Elisha Harris Janes nor Richard Leopold Leo ever studied at the École des Beaux-Arts in Paris, they worked within its traditions. Their most prominent structure is the ebullient Dorilton (1902), at Broadway and 71st Street, bolder and more sculptural than any professor at the École des Beaux-Arts would have encouraged. Montgomery Schuyler, the critic for the "Architectural Record", disapproved of its flamboyant appeal:
Document 9: FXFOWLE Architects: FXFOWLE Architects is an American architecture, planning, and interior design firm founded in 1978 by Robert F. Fox Jr. and Bruce S. Fowle as Fox & Fowle Architects. The firm merged with Jambhekar Strauss in 2000 and was renamed to FXFOWLE Architects in 2005 following Fox's departure. The firm is best known for projects in New York City including the Condé Nast Building, Reuters Building (3 Times Square), Eleven Times Square, renovation of the Jacob K. Javits Convention Center, and upcoming Statue of Liberty Museum.
Document 10: The Parisian: The Parisian () is a luxury hotel in Cotai, Macau, China owned by Las Vegas Sands, which has a half-scale Eiffel Tower as one its landmarks. It was originally expected to be operational in late 2015, with that later changed to August 2016. The hotel officially opened on 13 September 2016.
Document 11: Glattpark: Glattpark is a large construction project in Switzerland that is taking shape in Opfikon, close to the border to Zurich. As part of the construction project a new neighbourhood will be built by 2020; it is designed to provide room for 7,000 residents and about the same number of jobs.
Document 12: ETH Zurich: ETH Zurich (Swiss Federal Institute of Technology in Zurich; German: "Eidgenössische Technische Hochschule Zürich" ) is a science, technology, engineering and mathematics university in the city of Zürich, Switzerland. Like its sister institution EPFL, it is an integral part of the Swiss Federal Institutes of Technology Domain (ETH Domain) that is directly subordinate to Switzerland's Federal Department of Economic Affairs, Education and Research. The school was founded by the Swiss Federal Government in 1854 with the stated mission to educate engineers and scientists, serve as a national center of excellence in science and technology and provide a hub for interaction between the scientific community and industry.
Document 13: Herzog &amp; de Meuron: Herzog & de Meuron Basel Ltd., or Herzog & de Meuron Architekten, BSA/SIA/ETH (HdM), is a Swiss architecture firm with its head office in Basel, Switzerland. The careers of founders and senior partners Jacques Herzog (born 19 April 1950) and Pierre de Meuron (born 8 May 1950) closely paralleled one another, with both attending the Swiss Federal Institute of Technology (ETH) in Zurich. They are perhaps best known for their conversion of the giant Bankside Power Station in London to the new home of Tate Modern. Jacques Herzog and Pierre de Meuron have been visiting professors at the Harvard University Graduate School of Design since 1994 and professors at ETH Zürich since 1999.
Document 14: The Spiral (New York City): The Spiral is a proposed 65-floor skyscraper located in the Hudson Yards neighborhood of Manhattan, New York City. The project was announced in 2016 by real estate developer Tishman Speyer as a 1,005 foot skyscraper with 2.85 million square feet and 65 floors. The tower is being designed by Bjarke Ingels Group, the architectural firm behind One57.
Document 15: Renzo Piano: Renzo Piano, {'1': ", '2': ", '3': 'OMRI, OMCA', '4': "} (] ; born 14 September 1937) is an Italian architect and engineer. His notable buildings include the Centre Georges Pompidou in Paris (with Richard Rogers, 1977), The Shard in London (2012), and the Whitney Museum of American Art in New York City (2015). He won the Pritzker Architecture Prize in 1998.
ground_truth: Basel, Switzerland