The city known for the ancient ruins of **Machu Picchu** is **Cusco**, located in **Peru**. Machu Picchu is a UNESCO **World Heritage Site** and was built by the **Inca Empire** in the 15th century. This archaeological site is situated in the Andes and renowned for its impressive architecture and stunning views. It draws thousands of visitors each year, who hike the **Inca Trail** or take a train to reach the site. Machu Picchu is not only a symbol of Inca ingenuity but also a critical part of Peru's cultural heritage.