Question: Is Doñana National Park in Andalusia, southern Spain or Garajonay National Park in La Gomera, Canary Islands in Spain larger?
Context: Mauricio González-Gordon y Díez, Marquis of Bonanza (18 October 1923 – 27 September 2013) was a Spanish sherry maker and a conservationist.  Most of his life he worked for the family company, González Byass, where he increased its exports to a worldwide level.  His family estate was located in the wetland region called Doñana in southern Spain and was threatened by drainage efforts in the early 1950s.  González-Gordon with the help of researchers and international support managed to preserve the site, while at the same time donating some of his family land to the conservation effort.  Afterward, González-Gordon became one of the founders of the Spanish Ornithological Society in 1954.  His conservation efforts for Doñana culminated in the creation of the Doñana National Park in 1969.  The area was designated a UNESCO World Heritage Site in 1994. Garajonay National Park (Spanish: "Parque nacional de Garajonay" , ] ) is located in the center and north of the island of La Gomera, one of the Canary Islands (Spain).  It was declared a national park in 1981 and a World Heritage Site by UNESCO in 1986.  It occupies 40 km (15 sq mi) and it extends into each of the six municipalities on the island. The Doñana Disaster, also known as the Aznalcollar Disaster or Guadiamar Disaster (Sp: "Desastre de Aznalcóllar", "Desastre del Guadiamar"), was an industrial accident in Andalusia, southern Spain.  On 25 April 1998, a holding dam burst at the Los Frailes mine, near Aznalcóllar, Seville Province, releasing 4–5 million cubic metres of mine tailings.  The acidic tailings, which contained dangerous levels of several heavy metals, quickly reached the nearby River Agrio, and then its affluent the River Guadiamar, travelling about 40 kilometres along these waterways before they could be stopped.  The Guadiamar is the main water source for the Doñana National Park, a UNESCO World Heritage Site and one of the largest national parks in Europe.  The cleanup operation took three years, at an estimated cost of €240 million. The Gomera Socialist Group (Spanish: "Agrupación Socialista Gomera" , ASG) is a minor political party in Spain operating on the island of La Gomera in the Canary Islands.  It was founded in 2015 by Casimiro Curbelo, current President of the "Cabildo de La Gomera", after breaking away from the local branch of the Spanish Socialist Workers' Party (PSOE). La Gomera is a Spanish Denominación de Origen (DO) for wines that covers the entire island of La Gomera (Canary Islands, Spain) comprising the six municipalities of San Sebastián de la Gomera, Hermigua, Agulo, Vallehermoso, Valle Gran Rey and Alajeró.  It obtained its official status in 2003. La Gomera Airport (IATA: GMZ, ICAO: GCGM) is an airport located near the town of Playa Santiago on the island of La Gomera in the Canary Islands, 34 km southwest by road from the island's capital city, San Sebastián de la Gomera. Doñana National Park is a natural reserve in Andalusia, southern Spain, in the provinces of Huelva (most of its territory) and Seville.  It covers 543 km² , of which 135 km² are a protected area.  The park is an area of marshes, shallow streams, and sand dunes in Las Marismas, the delta where the Guadalquivir River flows into the Atlantic Ocean.  It was established as a nature reserve in 1969 when the World Wildlife Fund joined with the Spanish government and purchased a section of marshes to protect it.  The eco-system has been under constant threat by the draining of the marshes, the use of river water to boost agricultural production by irrigating land along the coast, water pollution by upriver mining, and the expansion of tourist facilities.  It is named after wife of the seventh Duke of Medina-Sidonia. The San Cristóbal Lighthouse (Spanish: "Faro de San Cristóbal" ) is an active lighthouse on the Spanish island of La Gomera in the Canary islands.  The current lighthouse is the second to have been constructed on the rocky headland of Punta de San Cristóbal (Saint Christopher’s Point), on the eastern side of the island, overlooking the approaches to San Sebastián de La Gomera, the main port and capital of La Gomera. The La Gomera giant lizard ("Gallotia bravoana"; Spanish: Lagarto Gigante de la Gomera ) is a lacertid (wall lizard) species that can be found on the island of La Gomera, one of the Canary Islands. Hermigua is a town and a municipality in the northeastern part of La Gomera in the province of Santa Cruz de Tenerife of the Canary Islands, Spain.  It is located 12 km northwest of the island's capital, San Sebastián de la Gomera.  The Garajonay National Park covers the southern part of the municipality.
Answer: Doñana National Park