Canadians are really eager to get their hands on a pass to a national park.

Parks Canada is handing out free 2017 Discovery passes to mark the country's 150th anniversary. The passes will be available for the entire year, but nature lovers were so ready to jump on the offer, that they crashed Parks Canada's website over the weekend.

"We are thrilled that so many of you are excited for Canada150 and the free souvenir 2017 Parks Canada Discovery Pass," the organization posted on Facebook.

"We wish to remind those who are trying to order their pass online that this is not a limited time offer and encourage you to come back and try again later."