What are the visa & residency requirements in Blida?

"In order to visit Blida, visitors must obtain a visa prior to their arrival. The process of applying for a visa involves submitting an application form, a valid passport, two passport-sized photographs, and a fee. Depending on the type of visa, additional documents may be required. In order to obtain residency in Blida, Algeria, applicants must submit an application form, a valid passport, two passport-sized photographs, a valid residence permit, and a fee. Depending on the type of residency, additional documents may be required. The application process may also involve an interview with a local immigration official," explained one expat living in Blida, Algeria.