What are the three levels of tourism products?

These three levels are core layer, formal layer and extension layer.

1, the core level: the effectiveness of meeting tourists' physiological and spiritual needs, which is manifested as tourist attractions and based on attractive elements.

2. Form level: the "physical object" of the comprehensive form of tourist facilities and tourist routes.

3. Extension level: all kinds of infrastructure, social services and travel convenience provided for tourists' tourism activities.