What are the visa & residency requirements in Greece?

"In order to visit Greece, foreign nationals must obtain a visa from a Greek embassy or consulate prior to their arrival. The process of applying for a visa involves submitting an application form, providing a valid passport, two passport-sized photographs, proof of sufficient funds, and proof of accommodation. In order to obtain residency in Greece, foreign nationals must apply for a residence permit. The process of applying for residency involves submitting an application form, providing a valid passport, two passport-sized photographs, proof of sufficient funds, proof of accommodation, and proof of employment or other legal source of income. Additionally, applicants may be required to provide a criminal record certificate and a medical certificate," mentioned another expat when asked about moving to Greece.