Background
Stockholm locates in the high latitude area(Latitude: 59°19.9548′ N Longitude: 18°3.894′ E), which has long daytime in Summer ( Summer Solstice：day length is over 18 hours a day) and long night time in Winter （Winter Solstice：day length is shorter than 6 hours a day.
the beauty of Artificial light
Because the day length is short here in Winter, the artificial light beauty is important for peoples in their daily life.Architects create different ways to delight the space. The first two photos were shot in Italian institute of culture, the last two were shot in Concert Hall.
The beauty of natural light
Drottingholm palace (court theatre)
