I think docks are fantastic. Not only are they highly geometrical, they also have enormous character from years of weathering the waves. When heading to a port town, I plan to take an hour or two to explore these structures and usually am rewarded with some interesting compositions.
For the background of this Boothbay Harbor shoot, check of the first post in the series here.

Any photo with the word, “Lobster” has an innate appeal.