If you're lucky, you can witness the surreal Nanjicheon Park.

Visited Nanjicheon Park in the morning during autumn First of all, it's possible on a clear day with slightly high humidity or a bit of fog Parking is free at Sangam World Cup Park and Sky Park if you leave before 9 AM You can park near Nanjicheon Park, which is above Sky Park, and take a walk around Sky Park and Sunset Park for about an hour