9. Seoul City Wall (South Korea)
The ancient Seoul City Wall, which once encircled Korea’s capital, now faces significant threats from modern urban development. In recent decades, sections of the wall have been demolished to make way for expanding infrastructure and urban renewal projects. The remaining segments are under constant pressure as the city continues to evolve, raising concerns about preserving Seoul’s historical heritage. Protecting what’s left of this centuries-old structure requires a delicate balance between progress and cultural continuity.
