The protesters, members of a political-artistic collective, topped their offering off with a huge photo of the German national emblem – the eagle – that had the head of Chancellor Angela Merkel and very large breasts.
The model was a lifelike replica of a curled turd- several feet tall and covered in gold paper.
Greek police soon arrested ten of the 13-strong group and confiscated their fake faeces, local online English-language newspaper Greek Reporter said.
Three photographers were also briefly detained at the demonstration.
The Germans' protest was directed against what they said was Berlin's "neoliberal EU policy". In a statement published before the arrest they denounced Germany's role in enforcing strict spending rules on struggling Greece.