An impressive video has emerged of acrobats performing on slacklines strung between balconies in Catania, Italy on Saturday.<br /><br />In the footage, captured at a professional slacklining event, athletes can be seen performing gravity-defying stunts as they jump on tightropes high above the ground.<br /><br />‘The Red Bull Airlines’ event in Catania featured 11 of the world’s top performers.
