IHG Hotels in Portugal are delighted to announce that they have been awarded the prestigious Green Key Certification – a true testament to the hotels’ commitment to promoting sustainability in the travel and hospitality sectors. InterContinental Lisbon, InterContinental Cascais-Estoril, InterContinental Porto Palácio das Cardosas and Crowne Plaza Porto were all awarded this impressive accolade, further strengthening Lisbon’s hospitality industry’s dedication to protecting the environment.