The 1st World Scout Jamboree was held from July 30, 1920 to August 8, 1920 and was hosted by the United Kingdom atKensington Olympia in London. 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).

It was at this event that Baden-Powell, the founder of Scouting, was acclaimed the Chief Scout of the World.

Olympia And Camping
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.
However, around 5,000 of the Scouts were encamped at the Old Deer Park in nearby Richmond. The Scouts rotated in and out of Olympia to give them all the opportunity to participate in the events there. The Thames flooded the campsite one night and Scouts had to be evacuated.
Olympia hosted numerous exhibitions, pageants and contests during the Jamboree event.

Closing Speech
Baden-Powell gave a closing speech at the end of the Jamboree:
"Brother Scouts. Differences exist between the peoples of the world in thought and sentiment, just as they do in language and physique. The Jamboree has taught us that if we exercise mutual forbearance and give and take, then there is sympathy and harmony. If it be your will, let us go forth fully determined that we will develop among ourselves and our boys that comradeship, through the world wide spirit of the Scout brotherhood, so that we may help to develop peace and happiness in the world and goodwill among men".

Jamborees from 1920
Many lessons were learnt from the first World Scout Jamboree, including the acknowledgement that an indoor venue was too restrictive for the activities and numbers of Scouts who would attend.
It was also realised that above all else, a Jamboree is a means of developing a spirit of comradeship between the boys of many nations and the more that aspect can be stressed, the more successful a Jamboree becomes.
The most previous Jamboree was held in Kristiansand in Southern Sweden in 2011, where nearly 40,000 Scouts attended, along with Chief Scout for the United Kingdom Bear Grylls and the King and Queen of Sweden.

Amongst the thousands of Scouts, there was also a selection of wild animals at the Jamboree:

  • An alligator from Florida
  • A baby crocodile from Jamaica
  • A lioness cub from Rhodesia
  • Monkeys from South Africa
  • A baby elephant
  • A camel