La Ronde is an amusement park in Montreal, Quebec, Canada. It was originally built as the entertainment complex for Expo 67, the 1967 world's fair. Today, it is operated by Six Flags Entertainment Corporation, under an emphyteutic lease with the City of Montreal until 2065. In-addition to being the Six Flags chain's northernmost location, La Ronde is the la…La Ronde is an amusement park in Montreal, Quebec, Canada. It was originally built as the entertainment complex for Expo 67, the 1967 world's fair. Today, it is operated by Six Flags Entertainment Corporation, under an emphyteutic lease with the City of Montreal until 2065. In-addition to being the Six Flags chain's northernmost location, La Ronde is the largest amusement park in Quebec and the second-largest in Canada.