1. Valid Passport: Your passport should be valid for at least three months beyond your intended stay in Germany. It should also have at least two blank pages for visa stamps.
2. Visa Application Form: Complete the visa application form accurately and legibly.
3. Passport-sized Photos: Provide two recent passport-sized photographs that meet the specific requirements set by the German embassy or consulate. The photos should be taken against a white background, with your face clearly visible.
4. Proof of Travel Insurance: Provide proof of travel health insurance that covers medical expenses, hospitalization, and repatriation for the entire duration of your stay in Germany. The insurance should have a minimum coverage of 30,000 euros and be valid for all Schengen countries.
5. Proof of Accommodation: Submit documents that prove your accommodation arrangements in Germany, such as hotel reservations or a letter of invitation from a host. This is to demonstrate where you will be staying during your visit.
6. Proof of Financial Means: Provide evidence of sufficient financial means to cover your expenses during your stay in Germany. This can include bank statements, sponsorship letters, or proof of employment and income.
7. Flight Itinerary: Submit a copy of your round-trip flight itinerary or confirmed travel reservations.
8. Travel Itinerary: Provide a detailed travel itinerary that outlines your planned activities and destinations in Germany.
9. No Objection Letter: If you are employed, provide a no objection letter from your employer stating that you have been granted leave and will be returning to your job after your visit to Germany.
10. Proof of Civil Status: Provide documents such as marriage certificates, birth certificates, or proof of legal guardianship, depending on your marital status and family situation.

The duration of stay allowed on a tourist visa to Germany can vary. Typically, tourist visas are issued for stays of up to 90 days within a 180-day period. This means that you can stay in Germany for a maximum of 90 days within a period of 180 days from the date of your first entry into the Schengen area.

The processing time for a tourist visa to Germany can vary depending on the German embassy or consulate where you apply and the workload of the visa processing department. In general, it can take several weeks for a visa application to be processed.