HEL is my final new terminal this year which was undergoing significant construction – terminals 1 and 2 were both being expanded.
As with FLL and FAY, I couldn’t solely use imagery in order to do this one; I couldn’t find any high-quality imagery for the above expansion points. For references, I also ended up having to use as many photos and videos of the airport as I could find. YouTube videos of people filming out the window while taking off, landing, and taxiing were particularly helpful.
My favorite part of this terminal is probably the 7-shaped portion on the right; I like that they chose to effectively create a pair of linear terminals, each parallel to their nearest runway.