In the former case, the purpose is to calculate the total economic value of the site and in the latter case, the object is to obtain a measure of the change in value when site characteristics change. [...] This enables the use of the demand curve for the market good to estimate the value of the non-market good, which in this case is the environmental quality of a site. [...] To value this change, the difference in the area under the demand curves but above the market price for the original level of amenities and for the improved level is calculated. [...] Taking only the climate data for each country and the coefficients for each of the climate variables resulting from the regression analysis, the contribution of climate to demand can be calculated and the countries then ranked according to their climatic attractiveness. [...] All of the specifications improve on the results of 16 the earlier studies for the Netherlands and the United Kingdom.