Since the beginning of time and first civilizations, there was interaction between people, cultures and intermixing with each other. 

 

Mix could be seen in daily habits, religion, cuisine, linguistics etc. Many don't know that palaces in antique times were some kind of marketing of the ruling elites. 

 

Mostly decorated with mythological creatures and a lot of symbols, to differentiate roles in society. 

 

This is illustrated Mesopothamian mythological creature of Apkallu, demi gods whose role was to cherish and protect knowledge. It's depicted while picking up the fruits of knowledge from hypothetical tree of Life. 

 

So simple, but yet so deep message.

And further more The Lamassu, protective deity in Mesopothamia.

The Lamassu is a celestial being from ancient Mesopotamian religion bearing a human head, bull's body, sometimes with the horns and the ears of a bull, and wings. It appears frequently in Mesopotamian art.

 

The Lamassu was household protective spirit of the common people, becoming associated later as royal protectors, and were placed as sentinels at entrances.