From Wikipedia:

Gangneung Hockey Centre (Korean: 강릉 아이스하키I 경기장) is an indoor arena currently in the coastal city of Gangneung, South Korea. The arena will be one of the two venues for the ice hockey events at the 2018 Winter Olympics, serving as the main venue for the men’s tournament and medal matches. It will also host the ice sledge hockey competition during the 2018 Winter Paralympics.

The cost of construction for the venue was estimated to be 108 billion won (about $90 million US). Construction started in July 2014 and appears to have been completed in March 2017.