Edward I's campaign of castle-building in Wales cost £80,000 between 1277 and 1304, and £95,000 between 1277 and 1329; by 1292 £12,000 had been spent on the construction of Caernarfon's castle — of which the southern facade was furthest along — and town walls.
Edvard 1.'s kampagne med borgbyggerier i Wales kostede £80.000 mellem 1277 og 1304, og £95.000 mellem 1277 og 1329; i 1292 var £12.000 blevet brugt på opførelsen af borgen i Caernarfon – hvoraf den sydlige facade var kommet længst – og bymurene.