What are the visa & residency requirements in Bologna?

"In order to visit Bologna, visitors must obtain a visa from the Italian Embassy or Consulate in their home country. The visa application process requires applicants to submit a valid passport, a completed application form, a passport-sized photograph, and proof of sufficient funds to cover the duration of the stay. Depending on the type of visa, additional documents may be required. In order to obtain residency in Bologna, Italy, applicants must apply for a residence permit at the local police station. The application process requires applicants to submit a valid passport, a completed application form, a passport-sized photograph, proof of sufficient funds to cover the duration of the stay, and proof of accommodation. Depending on the type of residence permit, additional documents may be required," mentioned another expat when asked about moving to Bologna, Italy.