"The significant boundary modification of the property first inscribed in 1996 stretches from the IJsselmeer (previously known as Zuiderzee) at Muiden to the Biesbosch estuary at Werkendam. This modification adds the New Dutch Waterline to the existing Defence Line of Amsterdam World Heritage site, to become the Dutch Water Defence Lines World Heritage property and also includes a number of small extensions and reductions to the boundaries of the Defence Line of Amsterdam World Heritage property. In particular, the extension illustrates a single military defence system, which was based on inundation fields, hydraulic installations and on a series of fortifications and military posts stretching over an area of 85 km. It also includes three smaller components: Fort Werk IV, the Tiel Inundation Canal and Fort Pannerden near the German border. Built from 1814 to 1940, they complement the already inscribed site, which is the only example of a fortification based on the principle of controlling the waters. Since the 16th century, the people of the Netherlands have used their expert knowledge of hydraulic engineering for defence purposes. The centre of the country was protected by a network of 45 armed forts, acting in concert with temporary flooding from polders and an intricate system of canals and locks."
Source: UNESCO World Heritage
Postcard 1
Fort Pampus is built on a man-made island and is part of the Defense Line of Amsterdam. Thanks to Stephany of Netherlands.
Postcard 2A
Muiderslot is an important part of Defence Line of Amsterdam. Thanks to Paula of United Kingdom.
Postcard 2B
Muiderslot is part of Nieuw Hollandse Waterlinie. Thanks to Mike of Netherlands.
Postcard 3
Loevestein Castle is part of New Dutch Waterline. Thanks to Mike of Netherlands.
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