Of course, one of the Incas most impressive legacies is Machu Picchu, the breathtaking city of the mountains. Researchers think it was built by Pachacuti, a powerful Incan ruler who acquired much of the Incan empire. It is amazing to think that the ancient Incas were capable of building this city that still stands as one of the most stunning sightseeing destinations in Peru. One of the most interesting facts about Machu Picchu is that the conquerors never found it. It is often referred to as “The Lost City” or “The City of the Clouds” and only has one narrow entrance point 8,000 feet above sea level. It wasn’t until 1911 that explorers found this ancient city. It is definitely worth the trip to see this magnificent sight. You can take a quick flight from Lima if you’re staying there, and be at Machu Picchu in no time.