Badalona is the city where I was born. There are not many touristic things to visit here. The main attractions are maybe the beach and its proximity to Barcelona (only 10km and 15minutes by train) so many tourists choose badalona to sleep when barcelona hotels are full. Weather, beach, local people and some roman remains will make you spend a good day in Badalona
"Some nice things to visit..."
Well there are some interesting things. Here is the list:
-ancient roman spas
-ancient roman house and streets
-s. jeroni de la murtra monastery
-anís del mono factory