Is this the most beautiful place of worship of South America? Many architects say that yes, the main Catholic church in Argetina, located right in downtown Buenos Aires is a mixture of architectural styles, with a neo-classical facade, and a nineteenth-century dome of the eighteenth century. Massive, impressive and very beautiful, inside and worth visiting and where you will find interesting examples of religious art, paintings, objects of worship. Built, demolished and rebuilt several times over the centuries, is today a symbol of the city.