Porta Nuova, the train station and San Salvario on the east side of the train station has a bad reputation for pick pockets and bag snatchers in the day and at night has drug pushers, drug addicts and prostitutes.
Porta Pallazzo the large open market near the centre has a bad reputation for thieves among its daytime crowds and at night has drug pushers, drug addicts and prostitutes.
Along the banks of the river Po you can be bothered by persistent beggars in the day and at night any parks in the city can become hang outs for drug addicts and strange people.