This house sign in Graz shows a bird standing on a combination of a star and a crescent. The combination star and crescent was already known in the Hellenistic period (4th–1st centuries BCE). The crescent represents the moon, the star represents the sun or the morning star.
The ‘Haus zum Blauen Karpfen’ (Blue Carp House) is located in Annagasse N° 14 at the 1st district of Vienna. The façade of the building was converted into the style of Empire in the year 1824.