According to archaeological research, the oldest building in the world is Barnenez, dating back to 4850 BC.
Located north of the French settlement of Finistère, it is 72 meters long and 25 meters wide. The building is said to be over 8 meters high,
This relic from the depths of history is believed to be a mausoleum. The robustness and width of the structure support the idea that it may have belonged to an influential political or spiritual leader from the tribal period.