What achievements of the Byzantines became the property of modern European civilization?

Probably the most striking achievements of Byzantine culture, which the modern world has adopted, can be considered the Byzantine style of icon painting, as well as the painting of frescoes and mosaics. Also, many modern temples, churches and cathedrals, palaces bear the prototype of Byzantine architecture. But, perhaps, the most important property of this culture is that Christianity originated in Byzantium, which in the modern world is one of the dominant and world religions of the planet.