Riachuelo is a national department store in Brazil, with over 300 stores and thousands of employees…read morenationwide, selling mostly clothing (their own brands and other brands, including Versace, Fendi, Karl Lagerfeld)--men's, women's & children's; housewares, beauty products/perfumes and other stuff.
This particular Riachuelo (also known as RCHLO in their commercials and ads) is pretty neat and well-kept. Sales staff here are generally helpful. In all, this is a store worth stopping into when in a mall in Brazil.