akers . ▁ ▁With ▁imm igration ▁of , ▁mainly ▁Italian , ▁day ▁labor ers , ▁the ▁population ▁began ▁to ▁grow . ▁ ▁At ▁the ▁end ▁of ▁the ▁ 2 0 th ▁Century ▁most ▁jobs ▁were ▁in ▁the ▁services ▁sector . ▁ ▁After ▁the ▁correction ▁of ▁the ▁T ic ino ▁river , ▁the ▁vast , ▁formerly ▁mar sh y ▁plain ▁became ▁home ▁to ▁a ▁number ▁of ▁commercial ▁and ▁industrial ▁buildings . ▁ ▁Ger ra ▁( G amb ar og no ) ▁Ger ra ▁was ▁part ▁of ▁the ▁old ▁Vic in anza ▁of ▁G amb ar og no . ▁ ▁In ▁the ▁ 1 6 th ▁Century , ▁Ron co ▁de ▁Mart ign oni , ▁Ron co ▁di ▁S op ra ▁and ▁Sc im iana ▁joined ▁together ▁to ▁form ▁an ▁independent ▁municipality . ▁ ▁This ▁municipality ▁is ▁listed ▁in ▁the ▁register ▁of ▁lands ▁of ▁the ▁parish ▁of ▁S . ▁Abb ond io ▁from ▁ 1 5 9 6 . ▁ ▁In ▁ 1 7 4 4 , ▁the ▁St . ▁Ro chus ▁and ▁Sebastian ▁parish ▁church ▁was ▁built . ▁ ▁Of ▁the ▁three ▁inhab ited ▁settlement ▁cores , ▁Sc im iana ▁has ▁remained ▁nearly ▁un changed . ▁ ▁The ▁network ▁of ▁narrow ▁streets ▁and ▁typical ▁G amb ar og no ▁style ▁alle ys ▁have ▁been ▁preserved , ▁while ▁most ▁of ▁the ▁wooden ▁bal con ies ▁are ▁gone ▁and ▁the ▁fish erm en ' s ▁houses ▁have ▁disappeared . ▁ ▁At ▁the ▁beginning ▁of ▁the ▁ 2 1 st ▁Century ▁more ▁than ▁half ▁the ▁working ▁population