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Setas de Sevilla ("Mushrooms of Seville") or Las Setas ("The Mushrooms"), initially titled Metropol Parasol, is a wooden structure located at La Encarnación square in the old quarter of Seville, Spain. It was designed by the German architect
The structure consists of six parasols in the form of giant mushrooms, whose design is inspired by the vaults of the 
Construction began on June 26, 2005, with an estimated cost of 50 million euros and a projected completion date in June 2007. However, unknown to the public, the project soon faced difficulties. By May 2007 engineering firm Arup informed the municipal authorities that the structure was technically unfeasible as designed, given that a number of structural assumptions had not been tested and the design appeared to violate the limitations of known materials. The wood used was birch, imported from Finland, because of its straight qualities.Marmol, Carlos.
Un proyecto imposible
diariodesevilla.es February 2, 2010. Accessed September 30, 2012 Much time was spent developing feasible alternative plans to buttress the structure, which themselves proved impractical because of the added weight. A feasible design using glue as reinforcement was finally settled on only at the beginning of 2009. By some estimates, due to delays, the total cost of the structure approached 100 million euros.Yanez, A. Estrella.
ABC.es January 30, 2010. Accessed September 30, 2012.
Jürgen Mayer
Jürgen Hermann Mayer (born 1965 in Stuttgart) is a German architect and artist. He is the leader of the architecture firm "J. MAYER H." in Berlin and calls himself ''Jürgen Mayer H.''
Life and work
He studied at Stuttgart University, The ...
and completed in April 2011. It has dimensions of 150 by 70 metres (490 by 230 ft) and an approximate height of and claims to be the largest wooden structure in the world. Its appearance, location, delays and cost overruns in construction resulted in much public controversy.
Description
The structure consists of six parasols in the form of giant mushrooms, whose design is inspired by the vaults of the Cathedral of Seville
The Cathedral of Saint Mary of the See ( es, Catedral de Santa María de la Sede), better known as Seville Cathedral, is a Roman Catholic cathedral in Seville, Andalusia, Spain. It was registered in 1987 by UNESCO as a World Heritage Site, along ...
and the ficus trees in the nearby Plaza de Cristo de Burgos. The Setas are organized in four levels. The underground level (Level 0) houses the ''Antiquarium'', where Roman and Moorish remains discovered on site are displayed in a museum. Level 1 (street level) is the Central Market. The roof of Level 1 is the surface of the open-air public plaza, shaded by the wooden parasols above and designed for public events. Levels 2 and 3 are the two stages of the panoramic terraces (including a restaurant), offering a view of the city centre.
History
From the 19th century a market was located in the plaza, housed in a dedicated building. The building was partially demolished in 1948 in accordance with plans for urban renewal. The market itself remained, however, until 1973, when the rest of the dilapidated building was finally demolished. The land remained dormant until 1990, when the city decided to construct underground parking with space for a market on top. However, in the midst of construction, ruins dating to the Roman and Al-Andalus eras were discovered, and construction was frozen after an expenditure of 14 million euros. In 2004, the city decided to attempt to develop the area again, and opened an international competition to solicit bids.Construction
Construction began on June 26, 2005, with an estimated cost of 50 million euros and a projected completion date in June 2007. However, unknown to the public, the project soon faced difficulties. By May 2007 engineering firm Arup informed the municipal authorities that the structure was technically unfeasible as designed, given that a number of structural assumptions had not been tested and the design appeared to violate the limitations of known materials. The wood used was birch, imported from Finland, because of its straight qualities.Marmol, Carlos.Un proyecto imposible
diariodesevilla.es February 2, 2010. Accessed September 30, 2012 Much time was spent developing feasible alternative plans to buttress the structure, which themselves proved impractical because of the added weight. A feasible design using glue as reinforcement was finally settled on only at the beginning of 2009. By some estimates, due to delays, the total cost of the structure approached 100 million euros.Yanez, A. Estrella.
ABC.es January 30, 2010. Accessed September 30, 2012.
Notes
References
{{commons category, Metropol Parasol Buildings and structures in Seville Tourist attractions in Seville Wooden buildings and structures in Spain