Daum is one of the most popular search engines in Korea, next to Naver. They have this cool thing, very similar to Google street view on Google maps. I discovered it a few months ago, although it is slightly difficult to navigate if you have very little knowledge of the Korean language. I can get by, but I'm still very much a novice when it come to typing Korean and knowing what any words mean (although I can read the Korean to you)!
Here's a cool website that I found, describing the features in English. If you live in Korea, you can check out your neighborhood or look around your house to see if you happen to be around while the Daum car was cruising about. If you don't live in Korea, there are some links of some popular places around the country so that you can look around and see what Korea is really like.
Anyway, here it is... Enjoy :)
Daum Street View: How To