Ascend the Wall is an experience that was created for the Oculus Rift where you ascend The Wall -- like, the wall. It's been on exhibit around the country, and it recently made a pit stop at SXSW where Game of Thrones star Maisie Williams, who plays Arya Stark, attempted to ascend The Wall.
Turns out Maisie is a little afraid of heights, and has an adorable freakout over the experience. Maisie explains what happened in her Mashable interview, and noted that the Ascend the Wall experience has a machine that blows air at you, further immersing you into the whole thing.
Also the guy who plays Hodor is a DJ.