Moving offices? It's the people that move with you, not the space you move into, that shape your culture.
Organizations are defined by people, not a space or location. But when you think of an organization you often think of it by its phsyical environment. Your high school is that brick building nestled into the side of the hill, or your first office is the fluorescent, overheard lights, grey shag carpet, and weird buzzing of the radiator. While that location might have seemed special (or haunting!) it was actually the people who inhabited the space that made it feel that way.