Is it a bird? is it a plane? No, it's someone swimming in London's 'sky pool' as the UK enjoyed its warmest day of the year on bank holiday Monday. This seemingly implausible sight became a reality in April when a world-first swimming pool opened in the UK capital, albeit only to residents of the luxury £1 billion ($1.42bn) Embassy Gardens development, The 25-metre acrylic aquarium-style pool was made in the state of Colorado in the US and carried more than 8,000 kilometres to the Nine Elms district in south-west London. Connecting the 10th floors of two apartments at Embassy Gardens, a few lengths of Sky Pool provide exercise and a panoramic view of a score of world-famous landmarks. Sky Pool swam from the boundary-pushing mind of property developer Sean Mulryan and was built by EcoWorld Ballymore. <strong>Scroll through the gallery below </strong>for pictures from launch day and more information on the vertiginous project. <strong><a href="https://www.thenationalnews.com/uae/megaprojects-10-tallest-buildings-in-the-middle-east-in-pictures-1.1088068">Megaprojects: 10 tallest buildings in the Middle East – in pictures</a></strong>