Immigration from both Sweden and all over Europe was encouraged, to bring in financial capital – if a person brought property in Marstrand, and resided there for two years, they received citizenship.
Finantskapitali linna toomiseks soodustati sisserännet nii Rootsist kui ka mujalt Euroopast – kui inimesed tõid Marstrandi varasid ja elasid seal kaks aastat, said nad kodanikeks.