Catedrala Mitropolitana (Holy Trinity Cathedral), Sibiu (must see)

Holy Trinity Cathedral stands as a significant religious landmark and the seat of the Metropolitan Church of Ardeal, established in 1861 within the Orthodox Church in Romania. The cathedral's inception dates back to 1857 when Bishop Andrei Şaguna proposed the idea, and construction commenced in 1902, culminating in 1904. The cathedral's architectural design, conceived by Virgil Nagy and Iosif Kamner of Budapest, mirrors a scaled-down version of the Saint Sophia Cathedral in Constantinople, featuring a symmetrical organization and central plan.

Octavian Smigelschi, a prominent figure in promoting the neo-Byzantine style in Sibiu, executed the original paintings of the church and the rood screen. This style, a fusion of Byzantine art and Romanian folklore, marked the advent of modern ecclesiastic art in Ardeal. The meticulous work, overseen by city architect Iosif Schussnig, included the completion of the copper roof in 1904. The cathedral's dimensions are impressive, measuring 53.10m in length, 25.40m in width at the center, and the dome reaching 24.70m in height (34.70m exterior) with a diameter of 15m. The spires, including the crosses, soar to 43m in height.

In December 1904, four blessed bells were placed in the main spires, although during World War I, the Austro-Hungarian Army repurposed three bells in the western spire as cannons. These were eventually replaced in 1926. The cathedral's interior showcases the craftsmanship of Constantin Babic's firm in Bucharest, responsible for crafting the intricate gilt-carved wood iconostasis and dome paintings portraying Christ Pantocrator flanked by angels.