[1] The cathedral is spacious, with Byzantine forms: straight lines and semicircular arches, thick walls, square pillars, large windows and spherical spires.
Today's exterior paintings are the work of a Bucharest architect and engineer who in 1935 built the market stalls in Giurgiu's central square and the Tribunal in Alei Park.
The present murals, executed in thick tempera in a neo-Byzantine style, were done by the painter Nicolae Stoica from 1939–59 and restored from 1989-2005 by Ion Drejoi, a student of his.
Initially extending the length of the church, covering three apses and including a dozen large icons, it was reduced to its present dimensions in the summer of 1948.
For instance, an icon featuring the Holy Trinity was donated by the widow of the Russian General Soimonov (killed at the Battle of Inkerman) in honour and for the souls of her husband and his fallen comrades.