Ahhhh...
FHORNLEGHORN. Thanks for posting!
[shhh] [size=9px]There's an "edit" button on the upper right side of your post!

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Dead give-away that this is a 'manipulated' photo:
a) sky, but no clouds reflected in the water
b) highlights on the big tree are more prevalent in the water reflection
c) too much of a 'glow' around the buildings (sky, obviously cut-out and replaced)
d) lighting is "off"... purple sky denotes "nightfall" and the buildings don't reflect that mood (i.e. no purple overlay on the main scene)
... and I'm sure, that there are many more "giveaways" if one takes the time the scrutinize.
As for "effects", it's difficult to say without seeing the photographer's "before image"... [confused]