Everland >
Everland is an amusement park, some of the outdoor rides might be a bit too cold to ride in winter. ie:The rollercoaster. They have a night parade which is pretty nice and colourful. If your tour group is staying until the evening, most likely your tour guide will bring you to see this multimedia show called Olympus Fantasy, got some nice laser and firework display.
Daemyung Vavaldi Park Resort >
Ski resort, quite close to Yongpyong Ski Resort, so they might bring you to there to see the Winter Sonata shoot locations.
Mt Sorak Shinhengsa temple >
Mt Sorak have a bit of frost now. If the weather is cloudy, the scenery is very nice when the clouds flow over the top of the mountain range.
Shinhengsa temple is at the foot of the mountain, got some nice statues there.
Namdaemum market >
A few streets with a lot of clothing stores and some restaurants. A lot of souvenir stores too, so good for street photography.
Myongdong >
Upmarket district a bit like Holland Village but a few times bigger. A lot of trendy fashion shops, restaurants. Girls paradise for shopping. (And yes, a lot of pretty girls here to take pictures of.)
Gingseng shop, Cordyceps shop, Amethyst showroom>
Erm, opportunity for the tour guides to earn some commission.
Lotte World >
Amusement park in Seoul with outdoor and indoor sections. The indoor section is quite amazing. You have rides inside a 4 storeys dome, with 2 basement floors of restaurants and a skating rink. The basement have long shopping alleys that leads to a nearby subway station, so the whole place is quite big.
Kyongbok Palace >
Part of it is under renovation now, so sort of spoil part of the landscape. But can concentrate on the colour architecture of the place, if you can get the tourists out of sight.
National Museum >
No photography allowed inside I think.
FIFA WC 2002 stadium >
Sharaton walker hill hotel >
Entrance to the casino will have two beautiful girls in beautiful hanboks for you to take pictures off. ^^