The ancient city known for its ruins in Peru is Machu Picchu. Situated high in the Andes Mountains, Machu Picchu was built in the 15th century by the Inca Empire and later abandoned during the Spanish Conquest. Its remarkable architecture and sophisticated terracing demonstrate advanced engineering and agricultural techniques. Rediscovered in 1911 by archaeologist Hiram Bingham, Machu Picchu is now a UNESCO World Heritage site and a major tourist destination, attracting visitors interested in its rich history and breathtaking scenery. The city remains an enduring symbol of Incan ingenuity and cultural heritage.