The Norwegian flag features a red field with a blue cross outlined in white. The design is inspired by the flags of other Nordic countries, particularly the Danish flag and the Swedish flag. The cross symbolizes Christianity and represents Norway's historical ties to these nations. Adopted in 1821, the flag's colors are said to reflect Norway's landscape, with red representing the country's mountains, blue symbolizing the sea, and white representing the snow. The flag is a source of national pride and is prominently displayed during national holidays and celebrations, such as Norwegian Constitution Day.