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Amsterdam 52°22’15.6”N, 4°53’30.7”E. The canal system of Amsterdam, known as Grachten. In the early 17th century, when immigration was at a peak, a comprehensive plan for the city’s expansion was developed with four concentric half-circles of canals emerging at the main waterfront (seen on the right-hand side of this overview). In the centuries since, the canals have been used for defence, water management, and transport. They remain a hallmark of the city. (Photo by Daily Overview/DigitalGlobe, a Maxar Company)
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