Rjukan is a small town located in Norway, known for its stunning natural scenery and rich industrial history. Nestled in a valley surrounded by mountains, it was established in the late 19th century and became famous for its hydroelectric power plants, which harnessed the energy of the nearby Numedalslågen river. The town is also notable for its unique solution to sunlight deprivation during winter months. To combat the lack of direct sunlight, large mirrors were installed on the mountainsides to reflect sunlight into the town square, creating a brighter environment for residents. This innovative approach has made Rjukan a point of interest for visitors and researchers alike.