It belongs to the same NeoRussian or PseudoRussian architectural trend as the Cathedral on the Spilled Blood in St-Petersburg.

Before the Cathedral an architect Sultanov was virtually unknown, but He was very active as a researcher and enthusiast of early Russian architecture. In this field he somehow came into the light of Tsar Alexander's III attention.
The result is in front of you.

The stylized lamp is adorning one of the porches.

The viewer sent very interesting story to me:

During the war the Nazis observers used the cathedrals elevation for directing the fire. So Russian Navy in Kronstadt was trying to destroy it for some time. The most amusing is the fact that the very same person who use to direct the Russian artillery was in tern put in charge of the cathedrals restoration after the war.

Through here one can get to the viewing point (about half of the buildings height).