Seoul hasIntersections been theNetworkscapitalIntersections of Korea for the past 600 years. The city has grown beyond the original stone-walled area to one of the largest metropolises in the world; its proper comprises approximately 600 km2(230 mi2) and a population of 10 million. The current city blocks in the Jongro (Bell Street) District started to shape during the Joseon Dynasty. Modern architectureArchitecture and development were rapidly superimposed on the historical city after the Korean War in the 1950s. This chapter discusses how the Jongro District’s historical organic streets and modern street networksNetworks provided unique opportunities for developing historical and cultural intersectionsIntersections through the Cheonggyecheon restoration project and Sewoon Sanga incremental redevelopmentRedevelopment plan. The neighborhood has been the city’s center since Joseon Dynasty and developed as a central business district in the 1960s and 1970s after the Korean War. It went through rapid development with expressways and superblock structures; however, the recent decline of the region calls for changes in urban and civic planning. In 2005, Cheonggyecheon (open stream) was restored to recover the history, culture, and environmentally friendly urban landscapeUrban landscapes. Sewoon Sanga is a mixed-use megastructure completed in 1968. The building crosses Cheonggyecheon and is wedged between interwoven old streets across the city blocks. The ongoing Sewoon Sanga development focuses on responding to historical, new communities and promoting competitive specialized industries. The district’s historical organic streets and intersectionsIntersections between urban developmentsUrban development provide opportunities for cultural exchange. These projects’ sustainable development strategies and impacts on resilient urban planning will be examined.