I went there twice, I liked it best at sunrise. The lighthouse itself is the motif, not so much the Elbe or the landscape (I was a little disappointed at first, but then very satisfied). Exciting story: The Hamburg merchants built the tower and diverted ships to the Lower Elbe (Northern Elbe) and thus to the port of Hamburg in order to be able to collect customs duties. A cartographer was even bribed to design the map to look like this..