This year UNESCO added the New Dutch Water Line to the site Defence Line of Amsterdam. The Dutch Water Line was a series of water-based defences combined with natural bodies of water that could be used to transform Holland, the westernmost region of the Netherlands and adjacent to the North Sea, almost into an island.
This postcard was sent by Kim
Pampus is an artificial island and late 19th-century sea fort located in the IJmeer near Amsterdam. It now belongs to the municipality of Gooise Meren and is open to visitors.
The fort is built of bricks and concrete. The fort has an oval shape and the main building has three floors. On the ground floor were the troops' quarters, kitchen, laundry, two coal-fired steam engines of 20 hp, two dynamos, telegraph, first aid station, and magazines. in: wikipedia
Loevestein Castle (Dutch: Slot Loevestein) is a medieval castle in the municipality of Zaltbommel, Gelderland, the Netherlands.
The castle was built by the knight Dirc Loef van Horne (hence "Loef's stein" (stone) house) between 1357 and 1397. Until World War II Loevestein Castle was part of the Hollandic Water Line, the main Dutch defense line that was based on flooding an area of land south and east of the western provinces. Currently the castle is used as a medieval museum and function centre. - in: wikipedia