Hello! Here are some pictures I took from a visit to Castle of Almourol, a medieval castle in the middle of the Tagus River in Portugal.
To get there we need to take a boat.
If the tide is low, it's possible to cross on foot from one of the margins, but the short boat trip will give you a much better experience with a beautiful view :)
If you come to Portugal and you like medieval castles, you should definitely go visit this one!