My country has an agreement which allows me to enter the Schengen area without a visa. Can I stay as long as I want?

No

As part of the Schengen area, Germany allows citizens of some countries to enter its territory without a visa. Even if your country is on this list, this doesn’t mean that you are allowed to stay for an unlimited period. Find out whether you need a visa to enter the Schengen area and which rules you need to keep in mind before you come.

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