 The see of the Diocese, and provincial capital is the city of Huelva (pop 150,000), located next to the estuary that is created by the confluence of the rivers Tinto and Odiel, opening itself to the Atlantic near the city.The Diocese was erected 22 October 1953, dismembered from the Archdiocese of Seville.Huelva Cathedral, "Catedral de Nuestra Señora de la Merced", has been restored several times.