Aerial view of the canal ring area of Amsterdam , Netherlands. News Photo - Getty Images
Amsterdam Canal Ring (Grachtengordel) - What To Know BEFORE You Go | Viator
Stelling van Amsterdam (Defense Line of Amsterdam) was a 135km ring of batteries, fortifications and inundation areas around Amsterdam, built between 1880-1920. Many forts can still be visited today. [1810x1648] : r/MapPorn