Koknese Castle - Credit: Wikimedia Commons
Koknese Castle - Credit: Wikimedia Commons
Koknese Castle (, ) is a complex in Koknese, Latvia, dating from the 13th century. The castle was situated on a high bluff overlooking the Daugava river valley. In 1965 a hydroelectric dam was built downriver, creating a reservoir that partially submerged the castle and flooded the surrounding valley. Read more on Wikipedia
Source: en.wikipedia.org