It is one of the five grand palaces built by the kings of the Joseon Dynasty. Changdeokgung is also referred to as the East Palace. For more information, see source from wikipedia.
The palace has many such beautiful buildings that looked like temples.
Take note of the roofs.
Most of the roofs have animal statues decorated on them. The animal statues are believed to get rid of evil spirits.
The top little window on every roof has different wordings.
This one has a different wordings as the above photo.
The palace tour guide told us to walk on the central of the path just like the royal family. Only servants or lowly ranks walked on the lower side of the path.