Water castles

castle in Strängnäs Municipality, Sweden

island castle in Trakai, Lithuania

castle

Olavinlinna (; ), also known as '''St. Olaf's Castle''', is a 15th-century three-tower castle located in Savonlinna, Finland. It is built on an island in the Kyrönsalmi strait that connects the lakes Haukivesi and Pihlajavesi. It is the northernmost medieval stone fortress still standing and also the best preserved of all the medieval castles in the Swedish realm. The castle forms a spectacular stage for the Savonlinna Opera Festival, which was held for the first time in the summer of 1912.

Swedish built medieval fortress in Russia

Castle in Ferrara (FE)

fortification surrounded by water

Japanese castle in Imabari, Ehime, Japan, which is well known as one of the three Mizujiro, or "Castles on the sea", in Japan

village in the Municipality of Metlika, Slovenia

thumb|Glimmingehus, entrance of the castle. Glimmingehus is a medieval era castle located at Simrishamn Municipality, Scania in southern Sweden. It is the best preserved medieval stronghold in Scandinavia. It was built 1499–1506, during an era when Scania formed a vital part of Denmark, and contains many defensive arrangements of the era, such as parapets, false doors and dead-end corridors, 'murder-holes' for pouring boiling pitch over the attackers, moats, drawbridges and various other forms of death traps to surprise trespassers and protect the nobles against peasant uprisings. The lower pa

islet - fortress in Nafplio, Greece

castle in Beersel, Belgium

building in Kristianstad Municipality, Skåne County, Sweden

château in Wallonia

castle in Hoensbroek, a district of the Dutch town of Heerlen.

palace in Austria

Castle in Slovenia

castle in Takamatsu, Kagawa prefecture, Japan

Castle in the Czech Republic

château

castle in Sirmione, Italy

museum in Ammerzoden, the Netherlands

national monument of the Czech Republic

museum in Doornenburg, the Netherlands

Japanese castle in Nakatsu, Oita prefecture

castle and estate in Ruurlo, the Netherlands

building in Eslöv Municipality, Sweden

structure in Epe

castle in Wallonia

Japanese castle