Wiki Loves Earth
is an international photo contest of natural protected areas. 2017 is the first edition in Canada. It coincides with the 150th anniversary of the Canadian Confederation during which Parks Canada offer free admission to all national parks.
It runs till end of June '17. More details here: https://ca.wikimedia.org/wiki/Wiki_Loves_Earth/Home
(Prizes are not bad either, i.e. 2nd place gets 20K gift card to spend on Photographic Equipment).