Rubjerg Knude Lighthouse is on the coast of the North Sea in Rubjerg, in the Jutland municipality of Hjørring in northern Denmark. It was first lit on 27 December 1900. Construction of the lighthouse began in 1899.

Desertification is not a problem that is usually associated with Denmark. Yet 60 meters above the sea, the Rubjerg Knude Lighthouse is slowly being claimed by shifting sands that have caused the structure to be abandoned for over 10 years, and will eventually cause its complete destruction.