Deuserreich, officially the Kingdom of Deuserreich (German: Königreich Deuserreich), is a country consisting of only one city, Haldenstein. It does not border any city at the moment, and the only connection with the rest of Gardellia is an express railway line to Magdalenenburg. Deuserreich is one of the biggest countries both by population and area. The highest concentration of inhabitants in Deuserreich is in central Haldenstein.
NOTE: This is only for fictional purposes.