Changgyeong Palace was built in 1104 as a summer palace. Once Seoul became the capital, the king lived here until the new palace was built. According to our tour guide, some members of the royal family lived here until 1989. It was VERY interesting, due to the fact that there are no modern conveniences like central heating or air. The houses were heated by coals underneath the house, as the heat crept up through the floor vents. I thought that in itself was amazing.
The garden was beautiful, even in February. It's a long walking tour, and there are bathrooms on the route. Take a bottle of water--there's a small gift shop en route, but of course, the drinks are expensive.
This is a very informative and interesting tour.