Amsterdam has been called Venice of The North as it has over 100km of canals, 90 islands and 1500 bridges. The three main canals, Herengracht, Prinsengracht, and Keizersgracht, dug in the 17th century during the Dutch Golden Age, form concentric belts around the city, known as the grachtengordel. Much of the Amsterdam canal system is the successful outcome of city planning. In the early part of the 17th century, with immigration at a height, a comprehensive plan was put together, calling for four main, concentric half-circles of canals with their ends resting on the IJ bay.
Known as the "grachtengordel", three of the canals are mostly for residential development (Herengracht or ‘’Patricians' Canal’’; Keizersgracht or ‘’Emperor's Canal’’; and Prinsengracht or ‘’Prince's Canal’’), and a fourth, outer canal, the present Nassau/Stadhouderskade, for purposes of defense and water management. The plan also envisaged interconnecting canals along radii; a set of parallel canals in the Jordaan quarter (primarily for the transportation of goods, for example, beer); the conversion of an existing, inner perimeter canal (Singel) from a defensive purpose to residential and commercial development; and more than one hundred bridges.
The defensive purpose of the Nassau/Stadhouderskade was served by moat and earthen dikes, with gates at transit points but otherwise no masonry superstructures. Construction proceeded from west to east, across the breadth of the layout, like a gigantic windshield wiper as the historian Geert Mak calls it – not from the center outwards as a popular myth has it. Construction of the north-western sector was started in 1613 and was finished around 1625. After 1664, building in the southern sector was started, although slowly because of an economic depression. The eastern part of the concentric canal plan, covering the area between the Amstel river and the IJ bay, was not implemented for a long time. In the following centuries, the land went mostly for park, the Botanical garden, old age homes, theaters and other public facilities – and for waterways without much plan. Several parts of the city and of the urban area are polders, recognisable by their postfix -meer meaning 'lake', such as Aalsmeer, Bijlmermeer, Haarlemmermeer, and Watergraafsmeer.
Known as the "grachtengordel", three of the canals are mostly for residential development (Herengracht or ‘’Patricians' Canal’’; Keizersgracht or ‘’Emperor's Canal’’; and Prinsengracht or ‘’Prince's Canal’’), and a fourth, outer canal, the present Nassau/Stadhouderskade, for purposes of defense and water management. The plan also envisaged interconnecting canals along radii; a set of parallel canals in the Jordaan quarter (primarily for the transportation of goods, for example, beer); the conversion of an existing, inner perimeter canal (Singel) from a defensive purpose to residential and commercial development; and more than one hundred bridges.
The defensive purpose of the Nassau/Stadhouderskade was served by moat and earthen dikes, with gates at transit points but otherwise no masonry superstructures. Construction proceeded from west to east, across the breadth of the layout, like a gigantic windshield wiper as the historian Geert Mak calls it – not from the center outwards as a popular myth has it. Construction of the north-western sector was started in 1613 and was finished around 1625. After 1664, building in the southern sector was started, although slowly because of an economic depression. The eastern part of the concentric canal plan, covering the area between the Amstel river and the IJ bay, was not implemented for a long time. In the following centuries, the land went mostly for park, the Botanical garden, old age homes, theaters and other public facilities – and for waterways without much plan. Several parts of the city and of the urban area are polders, recognisable by their postfix -meer meaning 'lake', such as Aalsmeer, Bijlmermeer, Haarlemmermeer, and Watergraafsmeer.
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