This is the single file version of the Medieval Castle uploaded by bold machines. The original had some significant problems with the mesh that Netfabb could not fix. This version was opened in 3DCoat as a surface model, then voxelized to well over 2m voxels. It was then exported back out as an stl file. It is now a manifold mesh, 1 shell rather then 99!
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Since this thing is quite large you will require a fairly large 3D Printer or you will need to resize it to fit...