Marijuana possession became legal in Washington state Thursday, as did same-sex marriage.

Voters in Washington and Colorado last month made those the first states to decriminalize and regulate the recreational use of marijuana. Washington's law, which took effect at 12:01 a.m. PST, allows adults to have up to an ounce of pot, but bans public use of marijuana, which is punishable by a fine, just like drinking in public.

Nevertheless, some people planned to gather early Thursday to smoke in public beneath Seattle's Space Needle. Others planned a midnight party outside the Seattle headquarters of Hempfest, the 21-year-old festival that attracts tens of thousands of pot fans every summer.

CBS Seattle affiliate KIRO-TV showed people smoking pot on city streets, and same-sex couples waiting in line for and getting marriage licenses, many toasting with champagne.

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