Whittier is located in southern Alaska, USA. According to statistics, the town’s population in 2010 was only 220, ranking 101st in Alaska. In winter, the rolling hills of Whittier are covered with snow, and the tranquility is like a landscape painting. In summer, tourists from all over the world flock to see the beauty of this paradise in Alaska. In addition to the beautiful scenery, the town is most famous for its “houses”. The life, work and study activities of all the people in the town are carried out in a 14-storey building. This building contains a convenience store, offices, police station, clinic, church and residential quarters. The only road to enter here is a one-way tunnel about 4 kilometers long.