西格里亚, also known as Sigiriya, is an ancient rock fortress located in Sri Lanka. It is famous for its stunning frescoes, water gardens, and the remains of a royal palace on top of a massive rock. The site dates back to the 5th century AD and is recognized as a UNESCO World Heritage Site due to its historical and architectural significance. The fortress is often referred to as the "Lion Rock" because of the lion's paws that once guarded the entrance. Visitors can climb the steep steps to enjoy panoramic views of the surrounding landscape and explore the remnants of the ancient civilization that once thrived there.