The greatest achievement of the Incas was building Machu Picchu. It is a really cool city high up in the mountains with cool stone buildings and beautiful views. It was built without any modern tools and it took a lot of hard work and planning. Machu Picchu shows how smart and creative the Incas were and how they could build amazing things without all the technology we have today. It is a really special place and shows how awesome the Incas were.
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The Incas' greatest achievement was building Machu Picchu, a high city in the mountains made of stone without modern tools. It shows how smart and creative the Incas were.
