Thinking Big

Sacsayhuaman, better known as "Sexy Woman" is a huge fortress like complex near Cuzco. Little is known about the big stones which are perfectly fit together. Some think it's a fortress, but much indicates it's rather a religious building. Whatever, the structure is amazing, not only from the views but also for the "hidden" things as the soil for instance: apparently the Incan people mixed lama fibres into the original soil to give it the strength needed to carry the heavy stones and absorb shock waves from earthquakes.