The Wenecja locality’s history is associated with the figure of Mikołaj Nałęcz of Chomiąża who in 14th century built a castle on the isthmus between the three lakes. As he saw his new residence similar to Venice in terms of its situation features, he named the site Wenecja (Polish for ‘Venice’). Wenecja was granted municipal rights in 1411 and maintained them into 16th century. Their loss was caused by changed political arrangements, as combined with a lessened importance of the castle in the strategic map of Poland after 2nd Peace Treaty of Toruń (Thorn) in 1466.
The castle was built by Mikołaj Nałęcz of Chomiąża around 1395, as a stone edifice intertwined with brick elements, founded on a square plan, side length 33 m. Its convenient situation between the three lakes has increased its value as a fortress. The castle was a notorious place for almost the entire period of its existence. In the initial years, this was so because of Mikołaj Nałęcz who, being a judge of Kalisz, had made a name for himself due to extremely cruel verdicts he was passing, which won him the nickname of the Wenecja Devil. Others believe that the sobriquet was coined in the course of a cruel civil war that rumbled through the area of Wielkopolska in 1382 to 1385. As Wenecja was taken over by the Gniezno bishopric, the castle was last upgraded in 1435, the works being led by Gregor of Ossek, brought along from Moravia. The castle was surrounded then with an additional pentagonal wall and a dirt wall; moreover, the stronghold was furnished with canons launching stone balls of diameters 3.4cm to 25cm. At that time, a gaol for priests sentenced by an ecclesial court was in operation there. As the 2nd Peace of Thorn was entered into in 1466, the castle ultimately lost its military significance and its slow decline is dated ever since.
Today, the castle is a picturesque ruin to which tourists visiting the nearby Narrow-Gauge Railway Museum and sightseeing other attractions on the Piast Route willingly pay visits.
References:Carlsten is a stone fortress built on the orders of King Carl X of Sweden following the Treaty of Roskilde, 1658 to protect the newly acquired province of Bohuslän from hostile attacks. The site of Marstrand was chosen because of its location and its access to an ice free port. Initially a square stone tower was constructed, but by 1680 it was reconstructed and replaced by a round shaped tower. Successive additions to the fortress were carried out, by the inmates sentenced to hard labour, until 1860 when it was reported finished. The fortress was decommissioned as a permanent defense installation in 1882, but remained in military use until the early 1990s.
The fortress was attacked and sieged twice falling into enemy hands. In 1677 it was conquered by Ulrik Frederick Gyldenløve, the Danish military commander in Norway and in 1719 by the Norwegian Vice-Admiral Tordenskjold. At both occasions the fortress was returned to Swedish control through negotiations and treaties.