The Incas, renowned for their advanced civilization in the Andes mountains of South America, constructed remarkable cities high in the clouds. Machu Picchu, perhaps the most famous Inca city, was built in the 15th century and abandoned a century later. Perched atop a mountain ridge, Machu Picchu showcased the Incas' architectural prowess with stone structures, terraces, and temples harmoniously integrated with the natural surroundings. Its enigmatic purpose, whether as a royal estate, religious center, or astronomical observatory, continues to fascinate explorers and historians alike, making it an enduring symbol of the ingenuity and cultural legacy of the Inca Empire.
