Metallurgist's Day (July 17) is an important festival. Members of indigenous northern ethnicities (Nenets, Dolgans, etc.) celebrate the festival of Heiro, which marks the return of the sun to the sky after the polar night. In June 2021, Norilsk Nickel announced a RUB 4 billion project to create an Arctic Museum of Contemporary Art (AMMA), which includes the reconstruction of the House of Trade building and the opening of an 8,500-square-meter museum. Architecture The head of the Norilsk camps, Avraami Zavenyagin, was made responsible for restructuring the camp barracks into a full-fledged city. The architects - Gevorg Kochar, Mikael Mazmanyan, Olgerd Trushinsh - were prisoners of Norillag. They were supervised by Vitold Nepokoichitsky, who arrived from Leningrad in 1939, so the first blocks to be constructed in the city were built in the neoclassical style and resemble St. Petersburg. Nepokoichitsky's wife, Lydia Minenko, also made a notable contribution. Local features such as Lake Dolgoye and reservoirs in the southwestern district were taken into account in the masterplan. The layout of the city was based on a main avenue, interrupted in places by squares. One of the main challenges was to minimize the impact of strong winds. The first solutions were unsuccessful (it was initially assumed that snow would be swept out along the city's streets, which were specially laid out along the axes of the prevailing winds, but the winds turned out to be too strong, and there was too much snow). After that, the decision was taken to use compact perimeter blocks, which determined the appearance of the city. In the 1960s, districts of standardized panel housing were built in the outskirts of Norilsk. The city is unusual in that its gas and water pipes, which are typically laid underground elsewhere, run overground. This is due to the problems created by the seasonal melting and freezing of the top layer of permafrost. The city center is dominated by buildings in neoclassical style, with outlying residential areas consisting of tower blocks. Effects of thawing permafrost Rising Arctic temperatures are causing permafrost to thaw, cracking foundations and making many of the city's buildings increasingly unstable. In response, regional authorities have announced a 650-million-ruble (€7.9 million) thermal stabilisation program for 10 Norilsk apartment buildings whose foundations are under threat. The system consists of a network of pipes through which refrigerant circulates, helping to freeze the foundations in the ground. Soil cooling systems