Use the route below for planning, then open the linked sources for details that can change.
Compare the two public places used for Sandbox
The Seoul Tourism Organization's official Start-Up route identifies Oil Tank Culture Park and Nodeul Island as real places used to create the fictional Sandbox environment. They are on different sides of Seoul and serve different public purposes. Oil Tank Culture Park is a regenerated industrial-cultural complex, while Nodeul Island is a Hangang cultural space with indoor venues and outdoor areas. Choose one as the main anchor unless a cross-city day already fits the trip. Do not describe either entire complex as a preserved corporate campus, and do not promise that event rooms, signs, furniture, or the exact camera composition from the series remain.
Read Oil Tank Culture Park as reused city infrastructure
The official route connects the park's tanks and cultural spaces with Sandbox. Follow the current public map because performances, installations, maintenance, and private events can change which interiors are open. The tanks are adapted industrial structures, not abandoned buildings available for exploration. Stay outside staff and equipment areas, avoid climbing surfaces, and follow photography rules during exhibitions. Pair the park with a same-side Mapo cultural stop or World Cup Park rather than immediately crossing to Nodeul. A non-drama connection helps the day remain useful when a tank or plaza is booked, and it gives the visitor a clearer understanding of Seoul's urban regeneration.
Use Nodeul Island as a living Hangang venue
Nodeul Island appears as another part of the fictional Sandbox, but the real island hosts concerts, exhibitions, shops, cafés, paths, and river views. Check the operator's current event and facility notice because an outdoor area can remain accessible while an indoor room is closed or ticketed. Keep emergency and service access clear, respect event queues, and avoid photographing identifiable visitors without consent. River weather, heat, rain, and nighttime conditions affect the visit. Build the route around the island's current cultural program and a safe return from the bridge rather than searching for a temporary production sign that may no longer exist.
Treat restaurant locations as ordinary businesses
The official Seoul feature also names businesses used for family and meeting scenes. A business can change name, tenant, menu, opening pattern, photography policy, or reservation system after filming. Do not make a small restaurant necessary to complete the route. If a current first-party channel confirms that ordinary customers are welcome, enter as a customer, buy normally, and keep the doorway and tables available for service. Otherwise, keep the two public cultural anchors and choose food nearby without claiming another filming relationship. Never substitute a similar storefront or private office from a fan list simply to reproduce the fictional startup story.
Leave real offices and residential addresses outside the route
Start-Up centers on companies and homes, but that story does not make actual workplaces, residential buildings, or production offices visitor attractions. Limit the guide to the officially named public cultural spaces and any business that currently accepts ordinary customers. Do not enter coworking floors, loading areas, event back rooms, or homes. Keep plot discussion short and avoid dialogue, screenshots, logos created for the show, posters, and actor images. A licensed present-day photograph of Oil Tank Culture Park or Nodeul Island can explain the setting without copying protected screen material. The practical goal is a lawful Seoul culture day, not access to fictional offices.
Use Seoul's filming feature, then check venue calendars
Use the official Seoul Start-Up itinerary for the work-to-place evidence. Use Oil Tank Culture Park and Nodeul Island channels for current openings, events, construction, indoor access, photography, accessibility, and transport. Recheck the chosen anchor close to travel and confirm the route back after an evening program. Do not preserve article-era hours, business status, or room layouts as current facts. If a public event takes over the remembered area, join only under its rules or use another open part of the complex. This source split keeps a stable filming relationship separate from venue conditions that change every week.