The Netherlands are flat and for a good part under sea level. We can live here due to dikes that protect us from the rivers and the sea. But even with the dikes most of the Netherlands would be under water if we did not have an additional aid. Because of the sea level the ground water level is also above the land. In large parts of the Netherlands we need big pumps to get all the water out. In the Golden Age of the Netherlands we used wind mills. You needed a lot of them. During the Industrial Revolution they built large steam pumps. The Ir. D.F. Woudagemaal is one of them. It is located in the northern part of the Netherlands and it is still in production. 2 to 4 times a year the modern pumps cannot cope with all the water and this old pumpbuilding has to be powered up.
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Check out our album about The Golden Gate Bridge.
Many people thought it would be impossible to cross the San Francisco Bay other than by boat. Until 1937, when this bridge was opened. Many photos have been taken of this bridge since. Here are some of ours.