The 1st World Scout Jamboree was held from 30 July 1920 to 8 August 1920 and was hosted by the United Kingdom at Kensington Olympia in London.
[1] 8,000 Scouts from 34 nations attended the event, which was hosted in a glass-roofed building covering an area of 6 acres (24,000 m2).
[7] The Olympia arena was filled with a foot-(30 cm)-deep layer of earth, which was turfed over, enabling the Scouts to pitch tents within the glass-roofed hall.
[10] Olympia hosted numerous exhibitions, pageants and contests (including tug-of-war[6][11]) during the Jamboree event.
The event was formally opened by the King's uncle (Prince Arthur Duke of Connaught and Strathearn), and daughter (Mary, Princess Royal and Countess of Harewood.