Thimlich Ohinga, Kenya
The almost 600-year old historical site, which is almost like the ruins of Great Zimbabwe in southern Africa, has its walls built of loose stones and blocks without any dressing or mortar.
Even without any mortar, the structure is still in place, despite some parts being destroyed by weather or other human activities. The ancient stone-walled fortress located in the town of Migori, Kenya, was recently awarded world heritage status by UNESCO. The fortress was used by ancient people in the area to protect themselves against attack and their livestock.
