Regulations and application procedure
Different visa regulations may apply depending on your nationality.

• Nationalities that do not generally require a visa:
  EU citizens and citizens of the European Economic Area and Switzerland do not require a visa for Germany regardless of the length of their stay.
   
• Nationalities that do not require a visa for stays of up to three months:
  This category includes citizens of the United States of America, Australia, Canada, Israel, Japan and New Zealand. An application for temporary residence may be submitted after arrival in Germany.
   
• Nationalities that always require a visa for entry into Germany:
  All other nationalities. In this case you will need a visa even for a short stay. This applies to many Arab, African, Asian and Eastern European states.

The Foreign Office describes on its website in great detail, which nationals are subject to certain conditions, such as entry visas, length of stay or when a visa waiver occurs, etc. Detailed information can be found here: http://www.auswaertiges-amt.de/EN/EinreiseUndAufenthalt/StaatenlisteVisu... (also available in Arabic). We are happy to assist you with our experience and excellent contacts to the embassies. Must your stay in Berlin be extended due to a medical necessity, we will also take care of the paperwork.