Glücksburg is a small town northeast of Flensburg in the district Schleswig-Flensburg, in Schleswig-Holstein, Germany, and is the northernmost town in Germany. It is situated on the south side of the Flensborg Fjord, an inlet of the Baltic Sea, approx. 10 km northeast of Flensburg. The town was originally the home of the family Schleswig-Holstein-Sonderburg-Glücksburg, members of which have reigned in the past in Greece and several northern German states.