The National Palace of Pena, situated in Sintra, Portugal, is a striking example of 19th-century Romantic architecture. Nestled atop the Sintra Mountains, it offers panoramic views over its lush surroundings. The palace is known for its vibrant colors, eclectic design, and a unique blend of Gothic, Manueline, Moorish, and Renaissance architectural styles. It is a UNESCO World Heritage Site and is regarded as one of the Seven Wonders of Portugal.