Prime Minister Stephen Harper wants Rouge National Urban Park to be one of the largest parks in North America.
Harper announced today that 21 square kilometres of land will be added to the park in Pickering and Uxbridge.
The new lands will nearly double the originally planned coverage of the park.
If the proposal goes through it will be 19 times larger than Stanley Park in Vancouver and 22 times larger than Central Park in New York City.
This is the first urban national park in Canada.