Grosse Île and the Irish Memorial National Historic Site commemorates three significant aspects of our history: first, the importance of immigration to Canada, particularly through Quebec City, from the early 19th century until World War I; second, the tragedies of Irish immigrants, especially due to the 1847 typhus epidemic; and finally Grosse Île's role from 1832 to 1937 as a quarantine station for the Port of Quebec, long the main point of arrival for immigrants coming to Canada http://www.pc.gc.ca/lhn-nhs/qc/grosseile/default.asp
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