A nuclear shelter is a specially designed structure that provides protection from nuclear explosions and radiation. These shelters are built to withstand blasts and contain materials that can filter out harmful particles. They are often located underground or in basements to enhance safety and security. People may use nuclear shelters during emergencies, such as nuclear attacks or accidents. The shelters are equipped with essential supplies, including food, water, and medical kits, to support occupants for an extended period. Many governments and organizations promote the construction of these shelters to ensure public safety in the event of a nuclear crisis.