This video says about itself:
5 February 2017
The walls of the structure are formed from ice blocks, with etchings of more than 1,000 short phrases forming a labyrinth. People from all over the world submitted their dreams online to be carved into the ice, in various languages including English, Chinese, Korean, and Russian.
The library on Baikal is expected to stand until April, and then it’s going to melt.