Introduction to Reykjavik: The name Reykjavik comes from the name of its discoverer in the 9th century AD. Due to the rich geothermal resources here, Icelanders built a geothermal heating system in Reykjavik as early as 1928. Geothermal energy provides energy for the city's industries, and there are no chimneys common in other cities. The buildings in the city are well-proportioned, with no skyscrapers. The houses are small and exquisite, and most of them are painted in red and green colors. Under the sunlight, they are colorful and colorful.