Machu Picchu is considered one of the world’s greatest mysteries due to the lack of clear information about its origins and purpose. The ruins are believed to have been constructed in the 15th century, during the height of the Inca Empire, and were abandoned just over a century later during the Spanish conquest.

One of the biggest mysteries surrounding Machu Picchu is why it was built in the first place. The Inca Empire was known for its impressive engineering and architecture, but the purpose of Machu Picchu remains unknown. Some experts speculate that it may have been a royal estate or a religious site, while others believe it was a military stronghold.

Another mystery surrounding Machu Picchu is how the Incas managed to construct such an impressive structure on top of a mountain in a location with limited resources. The ruins are made up of large, precisely cut stones that were fitted together without the use of mortar, and many of the stones weigh several tons.

Additionally, there are many theories about how and why the site was abandoned. Some historians believe that disease or warfare may have played a role, while others speculate that it may have been abandoned due to changes in the political climate or environmental factors such as a severe drought.

Despite ongoing research and exploration, the mysteries of Machu Picchu continue to captivate and intrigue visitors from around the world, making it one of the most fascinating and enigmatic sites in all of South America.