The Kreml, or Kremlin, is a fortified complex located in the heart of Moscow, Russia. It serves as the official residence of the President of Russia and is a symbol of Russian political power. The complex includes several palaces, cathedrals, and the famous Kremlin Wall. Constructed in the late 15th century, the Kreml features distinctive architecture, including the Assumption Cathedral and the Ivan the Great Bell Tower. It is a UNESCO World Heritage site and attracts millions of tourists each year, showcasing Russia's rich history and cultural heritage.