This article analyzes the role of United Nations Educational Scientific and Cultural Organization (UNESCO) sites on the enhancement of tourism destinations (TDs) performance, taking the Italian regions over the period 1995–2010 as a case study. Specifically, we aim at studying the effect of the inscription in the World Heritage List (WHL) upon the dynamics of the efficiency of the Italian regions as TDs. We use a two-stage data envelopment analysis window analysis, to detect efficiency trends and resort to both semiparametric pooled-truncated and panel data estimators to evaluate the determinants of the efficiency changes in TDs over time. Moreover, we test for the presence of spatial dependence in the efficiency of TDs. The results reveal that the WHL does not play a significant role in enhancing technical efficiency of TDs. These empirical findings are robust to alternative estimators and model specifications. Furthermore, the spatial analysis does not reveal significant spillover effects in the efficiency of TDs.

It is widely agreed that rules governing public procurement should be designed to achieve value for money. However, in the public works sector, ‘… the good being procured is usually complex and hard to be exactly specified ex ante, … [and] alterations to the original project might be needed after the contract is awarded. This may result in considerable discrepancies between the lowest winning bid and the actual costs that are incurred by the buyer’ (Bajari et al., 2006). There is now a wide body of literature focusing on cost escalation during the execution of contracts and their estimates reveal that it can be often quite large. This article is aimed at offering an empirical test of the determinants of adaptation costs in the public works procurement. Using a detailed data set on Italian public works contracts, we run an empirical analysis, grounded on the main conclusions reached in the literature, to test for the main drivers of adaptation costs.