June 24

Monday 24, 1918:

The giant cannon Big Bertha begins bombardments on Paris

Monday 24, 1901:

First exhibition of Pablo Picasso's work opens.

Sunday 24, 1894:

The IOC decides to hold the Olympic Games every four years.

Thursday 24, 1880:

First performance of O Canada, the song that would become the national anthem of Canada, at the Congrès national des Canadiens-Français.

Friday 24, 1374:

A sudden outbreak of St. John's Dance causes people in the streets of Aix-la-Chapelle, Prussia, to experience hallucinations and begin to jump and twitch uncontrollably until they collapse from exhaustion.