The investigation of values showed that museums as a whole are most often defended on the grounds of the economic benefits that they can bring, from cultural tourism, area regeneration, skills and education, and the quality of life. The values of the collections themselves are harder to untangle but they lie in the essential foundations of culture and identity. This aspect of their value is appreciated more in some countries than in others. In the UK and the Netherlands in particular, museums are being challenged to justify their collections. In most other countries this is neither a very public nor a general issue.