... this guy who looks so familiar to me but I can´t... Anybody?

It is Henri Charrierre, probably best known as the author of the novel ´Papillion´, which was made into a film starring Steve McQueen

http://tedkonyaeregli6thgraders.blogspot.com/2009/12/dear-class-this-week-we-will-read-life.html

(not suggesting you are a 6th-grader! - it was the first bit of info which included that picture that I found)

Thanks...

... the 7th one. What and where is it (city)? Does anybody know by any chance?

State University of Moscow?

Not sure.

looks like somewhere in Russia (the architecture..)

Palace of Culture and Science, Warsaw

exactly, even if in Moscow you can find twin buildings (the 7 sisters project) all of them are same ugly

Bucharest - The Place of Free Press (more or less translation) - in the past named The Spark  (Scanteii) Place - you can observe the same russian architecture...