Well I got the most things now...but there's something wrong with the rotation.
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As you can see there is something wrong with the left side, The bridge is worng and many more, like the stone, house etc.
Here is the code I'm using:
for (int i = 0; i < bms.Points.Count; i++)
{
float newX = (float)(bms.Points[i].X * Math.Cos(-rotation) - -bms.Points[i].Y * Math.Sin(-rotation));
float newY = (float)(bms.Points[i].X * Math.Sin(-rotation) + -bms.Points[i].Y * Math.Cos(-rotation));
bms.Points[i].X = newX + X;
bms.Points[i].Y = newY + Y;
}