Giant sheets of water tumble down vertical walls 13 metres (43ft) high that by day cascade into a multi-hued circle of fire, and by night seemingly defy gravity by flowing upwards – accompanied by an orchestral score from the award-winning composer of the Game of Thrones theme music. This water feature at the 2020 World Expo in Dubai, in the United Arab Emirates, combines the elements of water, earth and fire in a way that is both a surprise and a delight for the senses. With the theme “Connecting Minds, Creating the Future”, the expo consists of 192 pavilions spotlighting the tourist attractions, discoveries and ambitions of the nation responsible for each. The expo was supposed to run from October 20, 2020 to April 10, 2021, but was postponed because of the Covid-19 pandemic. It finally opened on October 1, 2021 and is scheduled to close on March 31, 2022. All passengers travelling to Dubai must hold a negative Covid‑19 RT‑PCR certificate for a test taken no more than 72 hours before departure. Arrivals from some African countries are currently banned and those flying in from India, Vietnam, the Philippines and a range of other countries must take another PCR test on arrival.