 There are many gems from ancient architecture, which can be found nestled amongst the mountains of Peru. One form of these, in which is a particularly fascinating mystery, is the different types and sizes of polygonal masonry, found throughout this incredibly ancient landscape. One such site, once named by the Inca after this site, namely Rimac-Tabo, was Lima-Tabo, now popularly known as Terawazi. We feel the reason why this site is rarely mentioned, like the many other archaeological and historical anomalies we share on our channel, rarely visited or indeed studied, is due to its truly remarkable and we feel almost unique polygonal methodology, which can still be found within the walls that make up this little publicly shared ruin, in addition to its seemingly impossible nature. A mystery of construction no one to this day seems to be able to decipher. Found some 80 kilometers west of Cusco, the site was used in antiquity as a ceremonial center and a resting place for the Inca chaskeys, known as legendary Inca runners, ones who would deliver messages by foot throughout these mountainous regions over long distances at incredible speed. Yet with all the other remarkable polygonal masonry found throughout Peru, we feel that this site was merely adapted by the Inca and due to its remarkable location and the aforementioned unique polygonal stonework present, was also seen by the Inca as a significant location. The design of the site itself is particularly peculiar and it does indeed appear to have once been a ceremonial site of some kind, perhaps a tomb. Yet what sort or indeed how these polygonal sites were once constructed remains a complete mystery, one which we find highly compelling.