What are the visa & residency requirements in Dortmund?

"In order to visit Dortmund, a visitor must obtain a visa from the German Embassy or Consulate in their home country. The type of visa required depends on the purpose of the visit, such as tourism, business, or study. The application process for a visa typically involves submitting a completed application form, a valid passport, a passport-sized photograph, and other documents such as proof of financial means and health insurance. In order to live in Dortmund, Germany, a person must apply for a residence permit. The application process for a residence permit typically involves submitting a completed application form, a valid passport, a passport-sized photograph, proof of financial means, proof of health insurance, and other documents such as a valid work contract or proof of enrollment in a German university. The residence permit is usually valid for a period of up to five years," remarked another expat in Dortmund, Germany.