Minä vuonna Presidentinlinna on rakennettu?
At the beginning of the 19th century, a salt storehouse stood on the site. Johan Henrik Heidenstrauch, then one of the elite of Helsinki's merchants, purchased the entire lot and erected between 1816–1820 a stately residence designed by architect Pehr Granstedt. Heidenstrauch House more resembled a palace than a merchants house. In 1837 it actually became a palace when it was purchased for the price of 170 000 roubles to be converted into a residence for the Governor-General of Finland. However, Nicholas I desired that it should become the official residence in Helsinki of the Tsar of Russia/Grand Duke of Finland, and the building became the "Imperial Palace in Helsinki".
1816–1820