A tower in a dream usually represents the construction of our lives – our inner attitude, outer life or both.
The tower or tall building is such a rich source of imagery that it is feasible to give only the most easily identifiable. Familiarity with our own tower in the waking state will act as a trigger for many other potent images.
Thus: to dream of a tower with no door suggests we are out of touch with our inner selves.
A tower with no windows signifies that we are unable to see and appreciate either our external good points or our inner ones.
An ivory tower suggests an innocent approach.
A square tower signifies a practical approach to life, whereas a round tower is more spiritually geared.
A round tower at the end of a square building is the combination of the practical and spiritual.