@toni77,
The easiest example I can think of is the idea of Geocentrism (the idea that the Earth is the center of the Solar System, and Universe). This had religious, historical and cultural roots and probably hindered the realization that the Sun was the center of the Solar System.
At an even deeper level the idea that the Universe has any three dimensional center at all is a preconception which is probably innate to the human thought process.