Culture of the EU institutions

My question is simple:
How would you describe the culture of the EU institutions?

I'm especially interested in anything you can tell me about diversity (of race/religion/ethncity/sexuality), gender roles, and to what extent political views and social class/educational background make a difference when working there.

TIA!

Disclaimer: I understand it is not possible to generalise or categorise all EU institutions or EU officials as being the same - I'm just asking for your individual experiences and/or what you have heard, to get some broad picture.