A Secession building from 1907–1908 on Piața Unirii in Oradea, with a glass-roofed passage and a stained-glass window of a black eagle, from which it takes its name.
The Orthodox church of the Dormition of the Mother of God in Piața Unirii, built in 1784–1790 and known for the globe in its tower that shows the phases of the Moon, in a mechanism of 1793.
The Cathedral of the Assumption, built between 1752 and 1780: the largest Baroque church in Romania, with an organ given by Maria Theresa and an interior of marble, frescoes and gilding.