‘The Discovery Of A Lifetime’, Archaeologists Have Unearthed A 5,500 Year Old Irish Tomb

19. Largest Structures 

Experts have also figured out that the largest structures were often used for religious or spiritual observance. A group of archaeologists were beginning to work on the grounds of Dowth Hall, an Irish estate  that dates back to the 18th century. The Dowth Hall happens to also form parts of the famous Brú na Bóinne complex. The Brú na Bóinne complex happens to be a UNESCO World Heritage Site since 1993 and has even be compared to Egypt’s Valley of the Kings.