Colorado has become the first U.S. state to license the sale of the drug for recreational use.
Before the 3D Cannabis Center opened at 8 a.m. as more than 100 people waited in snowfall to buy recreational pot under a landmark law voters approved in 2012.
According to CNN, buyers from Vermont, Arizona, Georgia, Oregon, Wyoming, Louisiana-and even Alaska and Hawaii waited in queues to buy marijuana.
Other prospective weed buyers came from Canada, Australia and Italy.
A total of 136 stores received state licenses last week, but most apparently had not obtained approval yet from their local governments to open on January 1.
In 2012, Colorado voters approved the sale of recreational marijuana, as did voters in Washington state, the report said.
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Under the new state law, residents are now able to buy marijuana like alcohol.
The cannabis purchase is limited to an ounce, which is substantial enough to cost about 200 dollars or more.