Hamburg. Truecolour satellite image of Hamburg (centre right), Germany. North is at top. Hamburg is one of Germanys 16 states (Lander); the citys limits are outlined in white. Urban areas such as Hamburg and Bremerhaven (far left) appear grey. Forests are dark green, grazing lands are light green and crops are mostly yellow. Bare ground appears pale yellow or brown, almost white. Hamburg lies on the Elbe River (blue), whilst the Weser estuary is at left. Variations in colour in the North Sea (upper left) are due to depth, currents and river discharges. Image taken by the American Landsat5 satellite. The smallest visible features are 30 metres across.