But visas can currently only be issued if the intended entry is absolutely necessary. The exceptional cases permitted entry into Germany are explained in both English and German on the website of the Federal Ministry of the Interior, for Building and Home Affairs under “Coronavirus: Questions and Answers” and there under “Travel restrictions / border controls”:
Furthermore entry to Germany for any purpose (including visits and tourism) is only possible for fully vaccinated People. The traveller must have received the last vaccination dose that is necessary for full vaccination at least 14 days before the date of travel, and the vaccine the person has received must be among those listed on the website of the Paul Ehrlich Institute. More Information is available here.