UNESCO World Heritage Sites are landmarks or areas recognized for their cultural, historical, scientific, or other forms of significance. These sites are protected under the World Heritage Convention, which aims to preserve the world's heritage for future generations. Each site is selected based on its outstanding universal value, and they can be found across the globe, from the Great Wall of China to the Pyramids of Egypt. The designation helps promote awareness and conservation efforts, ensuring that these treasures remain intact for visitors and scholars alike.