The story
The town of Uusikaupunki was founded as a town with the rights of commerce on April 19, 1617 by decree by Gustav II Adolf. His daughter and successor, Queen Christina of Sweden, raised her illegitimate half-brother Gustav of Vasaborg to the dignity of a count when she gave him the Countship of Nystad in 1647, which led to the county town sometimes being called Vasaborg. In 1721, the Peace of Nystad was signed in Uusikaupunki, ending the Great Northern War between Sweden and Russia, but as the Crimean War broke out in 1853, Uusikaupunki was attacked by French Navy and British Navy in 1855 during the Åland War. Up to the 19th century, Uusikaupunki was an important port for commerce and fishing, and up to the latter half of the 20th century, the Port of Uusikaupunki retained an important ship-building industry.
From Wikipedia’s article on Uusikaupunki, shared under CC BY-SA 4.0.4