Unless you have lived in Korea for a long time, you are probably unaware of Son-dol Day, which occurs every year on the 20th day of the 10th month of the lunar calendar. This year it falls on December 3.
If you are a bicyclist in Seoul and enjoy riding on the northern bank of the Han River near Haengju Mountain Fortress, you are probably aware of Gangmae Village and its surrounding fields of rapeseed flowers and rice paddies - but if not, you are truly missing a wonderful opportunity to temporarily step back in time.