6. Greet­siel

Martin Elsen has captured the sluice of Greetsiel from high above East Frisia and the North Sea. What makes this shot so special is the combination of green, brown and blue tones, and the interaction between the industrial structure and nature. The charming little coastal town of Greetsiel is well worth a day trip in its own right. Its fishing harbour is more than 600 years old, and the town boasts numerous buildings dating back to the 17th century – it’s an excellent place to enjoy a long walk.