What is there for tourists to do in Singapore???

My company creates unique experiences around the world but not in Singapore. In the last 2 weeks I have had a request from a major publication and a travel company in Shanghai to advise them on a great Singapore experience and I can't!

I have come across a company doing cycle trips in Singapore looking more at historical and cultural experiences but if you take away F1, Universal and shopping what else is there?

I'm extremely interested in members who have good ideas about why people should visit Singapore and what unique experiences they can enjoy when they do?