There are many Buddhist temples in South Korea. Here are a few you might want to see:

Jogyesa (조계사) is a major temple in the capital city of Seoul. When the lantern festival comes around, the temple is decorated with many colorful lanterns. The temple attracts thousands of visitors from the Seoul region.

Yongjusa (용주사) is famous for its temple bells; which are believed to be from around 854 AD. The temple was renovated by King Jeongjo to honor the infamous death of Prince Sado. Today, Yongjusa continues to be a major temple that attracts many visitors.

Guinsa (구인사) is a large temple that houses over ten thousand monks. It is also one of the few temples that operate a local university and supervises large areas of farm land. The temple prepares all its food from its farm land and feeds its monks unprocessed and healthy meals.

Magoksa (마곡사) is a major temple in the Gonju region, which occupies the southern part of South Korea. This temple is famous for its liquid gold and silver manuscripts and for its five story, bronze pagoda.

http://www.youtube.com/watch?v=uqff2SYMgV0