▁of ▁the ▁city ▁church , ▁a ▁building ▁which ▁has ▁under g one ▁several ▁modifications . ▁The ▁natural ▁center ▁of ▁the ▁city ▁is ▁otherwise ▁the ▁magnific ent ▁Ö re bro ▁Castle , ▁situated ▁on ▁an ▁is let ▁in ▁the ▁Sv art ån , ▁and ▁div iding ▁the ▁town ▁into ▁a ▁northern ▁and ▁a ▁southern ▁part . ▁This ▁castle ▁was ▁constructed ▁during ▁the ▁ste ward ship ▁of ▁Bir ger ▁Jar l ▁during ▁the ▁early ▁ 1 3 th ▁century ▁and ▁then ▁modified ▁and ▁en larg ed ▁during ▁the ▁reign ▁of ▁King ▁Gustav ▁V asa ▁in ▁the ▁ 1 5 6 0 s . ▁The ▁Ö re bro ▁Syn od ▁was ▁held ▁here ▁in ▁ 1 5 2 9 . ▁ ▁Notable ▁events ▁in ▁Ö re bro ' s ▁history ▁include ▁the ▁national ▁di et ▁meeting ▁at ▁Ö re bro ▁in ▁ 1 8 1 0 , ▁where ▁Jean - B apt iste ▁Bern ad otte ▁was ▁elected ▁crown ▁prince ▁of ▁Sweden . ▁ ▁Although ▁a ▁trade ▁town , ▁Ö re bro ▁remained ▁small ▁until ▁the ▁second ▁half ▁of ▁the ▁ 1 9 th ▁century , ▁when ▁it ▁grew ▁rapidly ▁as ▁a ▁center ▁of ▁the ▁national ▁sh oe - man ufact uring ▁industry ▁( see : ▁History ▁of ▁När ke ). ▁ ▁Cl imate ▁ ▁Ö re bro , ▁like ▁the ▁rest ▁of ▁the ▁area ▁close ▁to ▁M äl ard alen , ▁has ▁a ▁hum id ▁contin ental ▁climate ▁( K ö ppen ▁D fb ) ▁that ▁is ▁made ▁mil der ▁by ▁the ▁proxim ity ▁to