I do believe Yongsan is the next Gangnam over the next 15 to 20 years. Maybe closest comparison is NY Central Park and Upper East Manhattan. Yongsan National Park is only National park that rivals NY Central Park in 20 years. Yongsan is also building International Business district over the next 15 years and will bring 130,000 high paying jobs. Yongsan will become center of Korea in 15-20 years