The fortress is located exactly on the Kyumen River, at the confluence of its two tributaries, forming an island. If you move from Helsingfors to Vyborg along national highway No. 7, then there will be no way to avoid musket fire (not to mention artillery) from the fortress bastions. Therefore, I believe, it would not be superfluous to give here a description of the fortress, as well as several photographic images of its fortifications for the edification of future travelers.
The fortress easily accessible by bus from Hamina or Kotka. In Kotka, it is possible to book an individual excursion with a guide, if you have extra money.