We have a physical idea of a throne. But a throne is nothing more than a chair apart from that which it represents.
A throne represents power and authority - neither of which can be seen.
Majesty can be seen and felt. We often talk of charisma - that which extends beyond the physical dimensions of the person.
The Throne Of Majesty is the seat of the power and glory of our Lord Jesus Christ. It is the source of the fountain of living waters, the source of the river of life.