CalibCastle - Calibration test cube - stackable

This is my 3D printer test I have used for a while now.
I wanted something that was small to print ( < 30 mins) and could be stacked or joined together so as you did the tests they built into something bigger.. In this case a whole friggin' castle!! Upload your photo's and please like..

The test is in the print dimensions and the features.. they are mostly

The main turret is 24mm round
the base turret is 20mm round
the widest dimension (in the middle) is 30mm (top of entrance to rear)
the entrance is 10mm across, with 4mm entrance hole.. with curved overhang

The rear opening allows the entrance to connect to form a long wall
The top tower allows another base to stack on top of it. (testing x/y/z internal print dimensions)

The top wall is 2mm thick (all round) and the crenulations (bits on top of wall) are 2mmx2mmx2mm and form a retraction test.
Internally there is a cone, 14mm base, with 3mm walls..
The internal cone depth is 11mm to the point.

the top floor