Daily Overviewのインスタグラム(dailyoverview) - 10月30日 00時12分

This Overview details 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 defense, water management, and transport. They remain a hallmark of the city to this day. /// Created by @benjaminrgrant, source imagery: @digitalglobe

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