- wikidata.org wiki/Q473434imported from Wikimedia project. Russian Wikipedia. image. Das Schloss Sonderburg am 18. April 2014, Bild 05.JPG5,184 × 3,456; 7.62 MB. point in time. 18 April 2014.
- OpenTripMap.com en/card/R2415351Sønderborg Castle (Danish: Sønderborg Slot) is located in the town of Sønderborg, Denmark on the island of Als in South Jutland.
- outdooractive.com en/poi/denmark/sonderborg-…The town of Sønderborg arose under the protection of the castle. The strong castle was used as a prison for the Danish King Christian II from 1532 to 1549.
- commons.wikimedia.org wiki/Category:Sønderborg_…...grad na Danskem; château au Danemark; museum di Denmark; מוזיאון בדנמרק; museum in Sønderborg, Denemarken; Schloss in Dänemark; danskt slott; castle in.
- worldlist.vision eurasia/denmark/sonderborg-…Since 1921 Sønderborg Castle has been the home for The Sønderborg Castle Museum, which is the main museum for the former Duchy of Slesvig.
- castlestudiestrust.org blog/tag/sonderborg-castle/Within three days he was able to bring Nordborg Castle (Eng: North Castle) under his control, making the conquest of Sønderborg only a matter of time.
- britannica.com place/SonderborgIt was founded in the mid-13th century around Sønderborg Castle and chartered in 1461.
- tr.wiki7.org wiki/Сённерборг_(замок)Sønderborg Kalesi ( Danish Sønderborg Slot ), Danimarka'da Sønderborg Düklerinin eski konutu olan bir kaledir . Sonderborg şehrinin merkezinde, Jutland'ın...
- triphobo.com places/s-nderborg-denmark/s-nderborg…Opening & closing timings, parking options, restaurants nearby or what to see on your visit to Sonderborg Castle?
- tripendy.com location/sonderborg-castle-museumSønderborg Castle, dating back to 1158, had changed ownership many times until it came into the hands of the Dukes of Augustenburg from 1764 until 1921.