what could i do in summer in a city? ;)what do आप raccommend me?

hi everyone! i don't know what to do before i go to the sea. i live in Rome and i'd like to do something new this summer, i don't like staying all the दिन at घर watching tv...i draw i read and i sometimes play tennis... and sometimes (but not very often) i go to the swimming pool.. what do आप raccommend me? thank u all ;)