The best day to visit Malaga is on sunday, because almost all of the 36 museums are free. Most of the city stores close on sundays, so people get to spend the day with their family. So why not visit a museum or one of the art centers? It isn’t only useful for one time visit, most museums and art centers change the pieces displayed and update them and no one wants to pay for it each time there is something new you want to see.