Also known as the Three Holy Hierarchs Orthodox Cathedral, the church was built between 1936 and 1946 to plans by the architect Ion Traianescu. Because of the swampy soil, the foundation rests on 1,000 reinforced-concrete piles driven to a depth of 20 metres. Although the church was inaugurated in 1946, in the presence of King Michael I, the finishing work on the interior and exterior paintings by the painter Atanasie Demian was completed only in 1956 – a delay caused by the Second World War.
The building combines two architectural styles, the Romanian style with Moldavian influences and the Byzantine style. With its dimensions of 63 metres in length and 32 metres in width (and 11 towers, the highest of them 83.7 metres), the church is one of the tallest in Romania. The seven bells of the cathedral are very impressive. They are made of an alloy of metals brought from Indonesia and weigh over 7 tonnes. The acoustic harmonisation of the bells was carried out by the well-known composer Sabin Drăgoi. Their unique sound can be heard throughout the city. In the basement of the cathedral is the Museum Collection of Old Ecclesiastical Art of the Metropolitanate of Banat. The impressive collection comprises 3,000 ecclesiastical books, over 800 icons on glass and wood and over 130 ecclesiastical objects. The part of the basement facing the altar houses the necropolis of the Metropolitans of Banat.