I think what people may be overlooking by TwoPynts posting the image in his gallery is that he modified it from the original image. The artist that sculpted the sculpture holds copyright on that piece. Had TwoPynts posted his snapshot in it's original form as an example of "this cool sculpture I spotted at the airport", he may not have a problem. By cropping the image to show only the sculpture and postworking it in photoshop to create his own work of art, he has violated the original artists copyright. TwoPynts effectively created a derivative work. Under copyright law, only the holder of the copyright has the right to create or authorize the creation of derivative works.

The sculpture being displayed in a public place and there not being any "do not photograph" signs around does not diminish the effect of copyright. As unfair as it may seem, the image should be removed from the gallery as it violates the copyright of the sculptor.

It's all fun and games...
Until the flying monkeys attack!!!