Ondol is the traditional way to make the house very warm in winter. First, if we put fire on the fireplace, the heat goes under the house so that it can make the house very comfortable and hot.

In Unhyungung Palace, there are ¡°No-Rak-Dang¡±, ¡°Ii-Ro-Dang¡±, and ¡°No-An-Dang¡±. All the buildings are related to Gojong¡¯s family: Gojong, Empress Myungseoung, and Gojong¡¯s parents. Heungsundaewongun is Gojong¡¯s father. Heungsundaewongun¡¯s wife lived in No-Rak-dang first, then moved to Ii-Ro-Dang when Gojong and Empress Myeongsung got married. Since Empress Myeongsung had to live in No-Rak-dang, Gojong built Ii-Ro-Dang for Heungsundaewonguns¡¯ wife. No-Rak-dang was the ¡°an-chae¡± for Empress Myungseong. Because girls were not allowed to go outside the Palace, it was designed so spacious that girls felt very comfortable. Actually, it is the biggest building in the Palace. Because No-Rak-Dang is very big, Gojong and Empress Myungseong¡¯s marriage took place there. No-An-Dang was Heungsundaewongun¡¯s house. He met people from other countries there.