The World's Largest Techno Dance Party Has Event Dates For 2022 Not even the re-opening of Switzerland to vaccinated tourists could save the Zurich Street Parade. The World's Largest Techno Dance Party, as it is called, has been canceled for 2021. The next schedule date is Aug. 13, 2020, which will be the event's 30th anniversary. "We have hoped, planned and fought … [Read more...]