Sustainability cannot be looked upon as a series of measures independent from each other. As the need to be effective on the environmental side and continue economic growth persists, all parts of society need to integrate sustainable thinking as a cross-cutting dimension. Companies and corporations who want to implement new sustainable practices increasingly impose similar actions from their providers. This session will present three different approaches on how systems thinking works with the goal of defining how creating sustainable practices as an institution should affect our visions and missions in science centres. Are we sure that we have a coherent action line that includes energy saving measures for our buildings up to clear education for visitors on how to act at home? Do we think about the schools that we welcome in the same way or are we just satisfied by saving money because we reduce energy consumption?