Open Port Area Street is one of Incheon's most atmospheric historic walks, where the port-opening period, Japanese colonial buildings, Chinatown, and later urban layers sit close together. The area works less as a single monument than as a compact district for walking, looking at facades, and connecting several nearby museums and heritage sites.
Start around Incheon Art Platform or Chinatown and leave time to wander the side streets, where the history is often in the street pattern and old commercial buildings.