Spiral Minaret based on Abu Dulaf (Samarra, Iraq)

Loosely based on Spiral Minaret at Abu Dulaf, north of Samarra, Iraq.
Winding stairs inside top section probably much narrower than the original.
Next to the top stairs of the Great Mosque Minaret at Samarra itself is a small waiting room or closet. This model has that room as well. Not sure if that is historically correct.
If not scaled, this model measures 8.5 * 8.5 * 19.5 cm.
Height of original building: 32 m.