King Edward I of England's castle building program in Wales from 1282 to 1295 provides a unique event that can be studied in further detail. Edward's castle building program turns the conquest of Wales into an early example of what future English colonization would become. By examining the building of Conwy and Caernarvon in Wales and the accompanying social programs we are better able to understand how the English viewed conquest and colonization. The conquest spent approximately £35,000 on the building of the castles of Conwy and Caernarvon, a colossal sum for the time. The reallocation of resources from England into Wales provide important similarities to later colonial endeavors, especially in the large application of manpower to build successful colonies. Another similarity becomes the split between the use of local raw resources such as the stone and timber combined with the need for manufactured goods brought from England. The social changes also had a major impact. The construction of Edward's castles Conwy and Caernarvon replaced iconic locations of Welsh power. The accompanying Statute of Wales (1284) changed the Welsh legal landscape and forced the English legal system on the Welsh. By replacing Welsh locations of power and instituting legal reform England made it possible for its colonists to safely enter northern Wales and take control of the region.