Dock, Netherlands
The "Easy" version of the puzzle has about 100 pieces, "Medium" has about 200 pieces, "Hard" is about 300 pieces, and "Harder" is about 300 pieces, rotated (Rotate the piece by left-clicking on it to "pick it up", then right-click to turn it clockwise. To turn it counter-clockwise, hold down the Control key while right-clicking.)