The dome sits on an octagonal base and has an internal diameter of 31.25 meters.
A dome with a four faced clock sits on the base.
The second and third domes sit atop the first dome.
On top of the decagon sat an oval dome with a lantern, supported from within by six arches.
A second direct hit exploded the steel and stone structure upon which the dome sat.
The dome sits on an arcaded drum which is punctured by eight windows.
A new dome sits atop the building today.
A large raised dome sits on top of the central chamber.
Thus the domes sat firmly and immobily on the surface.
Intersecting arches support the square on which a dome with an oculus sits.