Science centers and museums are usually non profit organizations which are currently confronted to look for generous contributors from individuals donators, corporations (huge or small), foundations and or public agencies. Certain types of funding provide more freedom and focus less on near-term results to increase the chances of science centers and museum to achieve their objectives being more innovative and attractive. Sponsorship prospects _ corporates or individuals donors_ are usually looking to support a cause that they find valuable. Thus, these groups must be approached with slightly different messages. Nevertheless, in each case we are facing competition. There are many good causes looking for support. How can we differentiate ourselves? Who should we target and what is a good offering? What added value we can offer to our partners, that makes them wanting to extend their co-operation with us? Why some action succeed and some don’t ? In this session, from 3 or 4 examples, we will explore different ways to promote a fundraising strategy to a wide range of stakeholders from public or private sectors and how creating partnerships between museums and companies implies sharing objectives without loosing freedom an integrity to encourage a visionary and creative fundraising. Is it possible to fulfill sponsors needs, marketing and excecution processes with saving specific characteristics of science centres as beneficiaries. We will also try to raise a conversation among Ecsite members about common strengths and development points, science centers have in terms of co-operation with corporate sponsors and individual donors.