[1] The main contractor of the current town hall was Gabriel Hagert (1706–1774), the Mayor of Porvoo, who received financial support from the parliament and the Nyland Brigade for construction work.
The foundations of the building have not initially withstood the weight of thick structures and it has been tilted obliquely.
The permanent exhibitions in the town hall present the history of Eastern Uusimaa from the Ice Age to the 18th century, the town hall, and 19th century artists of the Golden Age of Finnish Art: Albert Edelfelt, Ville Vallgren, Johan Knutson, Louis Sparre, A. W. Finch and Saara Hopea.
[1] In accordance with the medieval urban tradition, the Christmas Peace is declared every year in Porvoo.
The declaration will be made on Christmas Eve at 4 pm from the town hall stairs.