are there any well-known parks there?
Yes, the Doñana National Park
Sanlúcar de Barrameda
Because of its position at the mouth of the Guadalquivir, Sanlúcar is a convenient home base for exploring the nearby Doñana National Park "(Parque Nacional de Doñana)" and its natural features. 
what is el greco? A Greek painter, sculptor and architect of the Spanish Renaissance which place did he move to, later in life? He migrated to Madrid, then to Toledo what sort of technique did he use in his works? Francisco Pacheco, a painter and theoretician who visited El Greco, wrote that the painter he believed in constant repainting and retouching in order to make the broad masses tell flat as in nature". does his work have any affinity to art from other cultures? Yes, certain art historians had asserted that El Greco's roots were firmly in the Byzantine tradition where was the aforementioned theoretician born? Sanlúcar de Barrameda where exactly is this place? In the northwest of Cádiz province, part of the autonomous community of Andalucía in southern Spain. is there anything culturally significant from that place? Yes, it is one of Spain's three better-known sherry-producing towns, and also home to the oldest horse races in Spain and some of the oldest in Europe
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Sanlúcar de Barrameda [SEP] Doñana National Park
Because of its position at the mouth of the Guadalquivir, Sanlúcar is a convenient home base for exploring the nearby Doñana National Park "(Parque Nacional de Doñana)" and its natural features. Within the park lies the Marisma de Hinojos (Salt Marsh of Fennel Plants); also within its precincts is the possible site of the legendary lost city of Tartessos, the capital of an ancient civilization that predated the Phoenicians in Iberia.