An annual and annually awesome tradition in San Francisco is the Chinese New Year's Treasure Hunt. For several twilit hours you search throughout downtown, examining signs and awnings, skulking past other teams, and dodging dragon-headed dancers, dressed in your finest Noir fedoras and trenchcoats. The clues are intelligent and often quite challenging, and while you can make progress on them right from the start, you can only complete them by going to the nooks and crannies of SF. The hunt comes in 4 difficulty levels, so beginners and veterans alike can work their grey matter. You'll want a team to attack the clues in parallel, so you can plan your route most efficiently -- having to double back for a clue will ensure you don't place first. However, the real benefit of the treasure hunt is exploring the city and discovering dozens of charming places you didn't even know existed -- things that you walk by each morning on the way to work but never noticed.
When: The evening of the Chinese New Year's Parade. In 2011 it's Saturday, February 19th.
Where: Downtown SF, starting at Justin Herman Plaza (near the Ferry Building), but ranging over many blocks.
How Much: $30 advanced, $40 door