Helsinki and Viapori 1808 Helsinki and Viapori 1808 « Back Share icon Share Share in Facebook Share in Linkedin Share in Twitter Send as an email Used in articles Turning Helsinki into a fortified city Article Article Go to content Photographer The National Library of Finland Period 1808 Finna.fi record (The link opens in a new tab.) Open in new window(Link leads to external service) Formats Map Authors Werming, N. G Buildings The National Library Doria, Digital Collections