The Palacio de Cristal is a stunning glass and iron structure located in Retiro Park, Madrid, Spain. Built in 1887 for the Exposition of the Philippines, it showcases a beautiful blend of architectural styles and serves as a prime example of 19th-century industrial design. The palace is surrounded by lush gardens and features a tranquil pond, making it a popular spot for both locals and tourists. Today, the Palacio de Cristal is used as an exhibition space by the Reina Sofia Museum, hosting contemporary art displays and cultural events. Its transparent walls allow natural light to flood the interior, creating a unique atmosphere for visitors to enjoy the art and the surrounding nature.