In 2021 Mirabilia signed the Glasgow Declaration on Tourism (COP 26), under the auspices of the UNWTO, which provides 5 paths (measurement, decarbonization, regeneration, collaboration, and financing) to be implemented on an annual basis. Mirabilia has been implementing in 2022 the Climate Action Plan in the framework of the Glasgow Declaration, focusing on measuring the ecological footprint and CO2 emissions, using the technical support of the European Sustainable Tourism Network, Ecotrans.

A pilot project experimenting with the use of the UNEP (United Nations Environment Programme) Resource Efficiency tool has been carried out to calculate the impact on the climate of hotels and tour operators on an initial sample of 20 companies in Italy, Croatia and Bulgaria. It has been involving tourism experts to support companies in collecting very detailed information requested by the tool.