From Wikipedia:

The Gangneung Olympic Park is a sports complex area in Gyo-dong, Gangneung, which will be the location of four of the venues of the 2018 Olympic Games. It will serve as the Olympic Park.

It will include the following venues:
Gangneung Hockey Centre – Ice Hockey (men competition)
Gangneung Curling Centre – Curling
Gangneung Oval – Speed skating
Gangneung Ice Arena – Short track speed skating and Figure skating

The Gangneung Stadium is also located in the same area, but will not be an Olympic venue.