World Heritage Sites
Taken from the west part of the polder "De Beemster". On the dyke to the town called "De Rijp". Below the dyke is the fortress of "Spijkerboor" whom is a part of the a UNESCO World Heritage site. This photo showes 2 of the UNESCO World Heritage sites, (1) Polder "De Beemster" and the (2) Defence line of Amsterdam in Dutch "Stelling van Amsterdam".
The Beemster Polder.
The UNESCO World Heritage Site Beemster is a municipality in the Netherlands, in the province of North Holland. Also, the Beemster is the first so-called polder in the Netherlands that was reclaimed from a lake, the water being extracted out of the lake by windmills. The Beemster Polder was dried during the period 1609 through 1612. It has preserved intact its well-ordered landscape of fields, roads, canals, dykes and settlements, laid out in accordance with classical and Renaissance planning principles. A grid of canals parallels the grid of roads in the Beemster. The grids are offset: the larger feeder canals are offset by approximately one kilometer from the larger roads.
Defence Line of Amsterdam, (De Stelling van Amsterdam).
The UNESCO World Heritage Site known as the Defense line of Amsterdam (in Dutch named Stelling van Amsterdam) is a 135 km long ring of fortifications around Amsterdam, consisting of 42 forts located between 10 to 15 kilometers the centre, and lowlands that can easily be flooded in time of war. The flooding was designed to give a depth of about 30 cm, insufficient for boats to traverse. Any buildings within 1 km of the line had to be made of wood, so that they could be burnt and the obstruction removed.
The Stelling van Amsterdam was constructed between 1880 and 1920. The invention of the aeroplane and tank made the forts obsolete almost as soon as they were finished. Many of the forts now are under the control of the town councils and the nature department, and may be visited. Monuments Day, on the second Saturday in September, is the ideal day to visit as entrance is free.