It is a place of worship and an architectural monument of national significance, entered in the Register of monuments of history and culture of the municipality of Chisinau. It is the former chapel “St. Emperors Constantine and Helen” of the gymnasium no. 2 for boys (in the interwar period – military high school “Mihai Viteazul”), built between 1898-1902, under the direction of the diocesan architect Mihail Seroținski.
It has an inscribed Greek cross plan with four pillars on which the circular dome drum rests. The exterior is decorated in the spirit of the Byzantine-Russian style. In front of the entrance is a porch with sturdy columns. During the Soviet period it was long used as a planetarium.