South Korea
On January the 15th, or the nearest full moon on the lunar calendar. Thousands of people take a stroll up Hwawangsan and burn some very flammable reeds.
I'm not too sure why they do this, may be some, thing ridiculous to do with spirits. You could probably Google it if you really want to know. I'm happier in ignorance.
It's worth seeing, young and old flock from south Korea to do so.
The surrounding town is about as interesting as a mute standup, but it has a wonderful BBQ restaurant at the bottom of the mountain, owned by a Korean gent who spent many years in Boston and will provide free alcohol at the chance to brush up on his English.
Get a bus from Daegu to Changnyeong, takes about 45 mins. I think the bus is from Daegu's west terminal, can't really remember.
A taxi would cost around 45000 won.
Visit english.visitkorea.or.kr/enu/TR/TR_EN_5_1_3_1_1.jsp for bus timetables