The Kremlin Wall is a historic fortification that surrounds the Moscow Kremlin, the official residence of the President of Russia. Built between the late 15th and early 17th centuries, the wall is made of red brick and features 20 towers, each with its own unique design. The wall serves both a defensive purpose and as a symbol of Russian power and authority. The Kremlin Wall is also home to several important landmarks, including the Tomb of the Unknown Soldier and the Tsar Bell. It is a UNESCO World Heritage site and attracts millions of visitors each year, who come to explore its rich history and architectural significance.