La Donaira is a luxury eco retreat which has been hailed as one of Spain’s most exciting agricultural projects and is paving the way for eco-tourism. The 750-hectare farm is based largely on a concept known as regenerative agriculture, whereby the fertility of the soil is increased by the process of integrated farming, permaculture and organic management. The farm is home to a range of rare breeds, including Pajuna cattle, Merino sheep and over 70 exquisite Lustiano horses, which are the oldest saddled horse of its kind in the world.