It's the original pop-up: northern Sweden's ICEHOTEL was the world's first hotel made of snow and ice when it opened back in 1989.
원문출처 : http://www.cnn.com/2016/12/08/hotels/sweden-icehotel-2017/index.html
원문출처 : http://www.cnn.com/2016/12/08/hotels/sweden-icehotel-2017/index.html