Most non-magicians taught to present a trick in a single location
Who
Luis de Matos
Where
Portugal Porto
When
Magician Luis de Matos (Portugal) taught 52,000 people a simple method to apparently vanish 52,001 silk handkerchiefs simultaneously at the Estádio do Dragão football stadium, Porto, Portugal. The effect (not the lesson) was shown live on RTP television on 16 November 2003. The illusion was part of the stadium's opening ceremony, inaugurated with a friendly between FC Porto and FC Barcelona.