Above is a shot of a house in Guryong Maeul, with the Tower Palace, Korea's tallest building, in the background. This article has more information about the village:
Against the backdrop of Tower Palace and other luxury residence complexes in affluent southern Seoul, tiny, shoddy shacks unevenly built with boards, vinyl and cloth stand side-by-side.[...]
Located at the foot of Mt. Daemo in Gaepo-dong, Guryong Village is one of the largest unlicensed shack clusters. Currently, some 1,300 households are in the village of about 491,000 square meters, according to the local district office.
The village was created around 1988 when the government removed illegal houses under redevelopment projects ahead of the Seoul Olympic Games. The people who lost their houses were driven into the village and built their shacks on private land owned by others. [...]
These unregistered houses don't have addresses and mail doesn't reach them. The residents pay their water and electric bills together and share toilets.
The village may be redeveloped at some point in the near future, as the rest of the article notes. At the moment, a year after the article was published, it's still standing.