For more than 30 years, the northeastern Chinese city of Harbin has hosted the Harbin International Ice and Snow Sculpture Festival. More than a million visitors are expected to pour into the city to view its ice sculptures, which you can see in the video above. Some of them are the biggest ice sculptures ever carved. The festival also features events like ice swimming and sculpting competitions and even a mass ice wedding of 15 couples (including one couple from Ukraine). State run Xinhua news agency said the festival is the largest ever, filling a space as big as 112 football fields. Over 10,000 people worked to build the festival over the past few months. It runs through the end of February.