▁to ▁have ▁replaced ▁the ▁much ▁larger ▁for tr ess ▁of ▁Gam le borg ▁which ▁was ▁only ▁ ▁away . ▁The ▁move ▁could ▁be ▁explained ▁by ▁the ▁fact ▁that ▁in ▁ 1 1 4 9 , ▁three - four th s ▁of ▁Born holm ▁had ▁been ▁surrender ed ▁to ▁E sk il , ▁arch bishop ▁of ▁Lund . ▁As ▁a ▁result , ▁King ▁S we yn ▁III ▁wanted ▁to ▁establish ▁his ▁own ▁seat ▁of ▁power ▁on ▁the ▁remaining ▁fourth ▁of ▁the ▁island . ▁While ▁it ▁could ▁not ▁be ▁compared ▁to ▁the ▁arch bishop ' s ▁Hamm ers hus , ▁L ille borg ▁was ▁never theless ▁a ▁fine ▁strong hold ▁and ▁appears ▁to ▁have ▁been ▁easier ▁to ▁defend ▁than ▁the ▁much ▁larger ▁Gam le borg . ▁There ▁is ▁evidence ▁suggesting ▁the ▁for tr ess ▁bur nt ▁down ▁in ▁ 1 2 5 9 ▁when ▁Prince ▁Jar om ar ▁of ▁R ü gen ▁storm ed ▁and ▁destroyed ▁the ▁" king ' s ▁strong hold " ▁on ▁Born holm . ▁However , ▁co ins ▁mint ed ▁after ▁that ▁date ▁have ▁been ▁found , ▁indicating ▁it ▁was ▁inhab ited ▁after ▁its ▁storm ing . ▁ ▁Architecture ▁L ille borg ' s ▁construction ▁in land ▁rather ▁than ▁on ▁the ▁coast ▁has ▁been ▁compared ▁to ▁that ▁of ▁Ref sh ale borg ▁on ▁Borg ø ▁in ▁Mar ib o ▁lake . ▁It ▁had ▁a ▁large ▁tower , ▁ ▁square , ▁protect ing ▁the ▁entrance ▁to ▁the ▁cour ty ard . ▁Its ▁walls ▁were ▁ ▁thick ▁and ▁from ▁the ▁top ▁it ▁was