baroque domes in the shape of an onion (or other vegetables or flower-buds) were common in the holy roman empire as well. the first one was built in 1576 by the architect (1512–1594) on the church of the in augsburg. usually made of copper sheet, onion domes appear on catholic churches all over southern germany, czech lands, austria and sardinia and northeast italy. onion domes were also a favourite of 20th-century austrian architectural designer friedensreich hundertwasser.