The Prince Christian Sound is a waterway in Southern Greenland.
It separates the mainland from Sammisoq and other islands of the Cape Farewell Archipelago near the southernmost tip of Greenland. The name was given in honour of the prince, later king Christian VIII of Denmark.
Wikipedia https://en.wikipedia.org/wiki/Prince_Christian_Sound
Address Greenland
Coordinates 60°7'9.879" N -43°37'23.627" E