Punta Umbría is the closest beach to Huelva City and is the most popular resort along the Huelva Costa de la Luz. During July and August it is overflowing with Spanish visitors and it is worth booking accommodation in advance at this time. It sits on the banks of the Río Odiel river estuary and is surrounded by extensive salt marshes, which make up the El Paraje Natural Marismas del Odiel, the most important nature reserve in the area after the Parque Nacional Coto Donaña. It has about 14, 900 inhabitants.