Seafeld City is one of two maps added to Planarcadia in the Honkai Star Rail 4.2 update, and it packs a straightforward coastal layout with chests scattered across piers, staircases, and a mayor's residence. The map is small enough to clear in one session if you know where to look, and most chests sit within a short walk of the Space Anchors.
Seafeld City chest overview
Seafeld City contains basic treasure chests, a Bountiful Treasure chest tied to the Interplanar Jump puzzles, and Furbobo Treasure spots. Every chest ties to one of four Space Anchors: Seafeld Station, Seaside Avenue, Mayor's Residence, Seafeld Park, and Court of Echoes.
| Anchor | Chests covered |
|---|---|
| Seafeld Station | Chests 1–7 |
| Seaside Avenue | Chests 8–9 |
| Mayor's Residence | Chests 10–13 (incl. Bountiful) |
| Seafeld Park | Chest 14 |
| Court of Echoes | Chest 15 |
Seafeld Station area (Chests 1–7)
Teleport to the Seafeld Station Space Anchor and turn left on spawn. The first chest sits tucked into the corner beside a bench.
Walk toward the main city and cross the short bridge leading away from the station. Look left into the parking lot to find chest 2 between parked cars.
From that parking lot, follow the pier heading east. At the end of the walkway, chest 3 rests on a bench overlooking the water.
Backtrack to the parking lot, cross the road, and keep going straight. Chest 4 sits on a pier to your right.
Chest 5 is close by, hidden next to a bush near the pier's entrance. Cross the road again and climb the stairs. Keep moving forward until you reach another staircase, and instead of heading up, look to the right of it for chest 6.
For chest 7, climb the next two staircases from chest 6's position. You'll find it at the top next to a table.
Seaside Avenue area (Chests 8–9)
Warp to the Seaside Avenue Space Anchor and cross the street. Look for a building with dark brown exterior walls — chest 8 sits near the entrance alongside a cluster of umbrellas.
From there, follow the seaside road north toward the far pier. Chest 9 waits at the very end of that path.
Mayor's Residence area (Chests 10–13)
Spawn at the Mayor's Residence anchor and walk toward the building itself. Chest 10 is planted on the right side of the entrance.
Step back outside and use the Interplanar Jump. In the first area of the jump, head all the way down and take the exit to grab chest 11.
Use the Interplanar Jump a second time. Push through to the end of the sequence and take the exit there — chest 12 is a Bountiful Treasure chest, so it's worth the extra steps.
Teleport back to the Mayor's Residence anchor. Instead of approaching the residence, turn left and climb two staircases. Chest 13 sits beside an NPC at the top.
Seafeld Park and Court of Echoes (Chests 14–15)
Fast travel to the Seafeld Park Space Anchor and walk straight ahead. When you reach the Interplanar Jump entrance, look to your left — chest 14 is in front of a bench.
For the final chest, teleport to the Court of Echoes anchor and glance left on spawn. Chest 15 is nestled behind a small tree.
How to know you're done
Open the map and hover over the Seafeld City region. Your exploration progress indicator should reflect all chests collected, and the mini-map will stop highlighting undiscovered treasure icons in cleared zones. If a chest count looks off, Interplanar Jump chests (11 and 12) are the most commonly missed — they require exiting the jump instead of completing the puzzle loop back to the start.
Seafeld City is the smaller of the two 4.2 maps, so once the 15 chests plus Furbobo Treasure spots are cleared, the heavier lift moves to the four-floor Seafeld TV Tower. Handle Seafeld City first — the anchors are closer together, the puzzles are lighter, and the rewards stack nicely before you head into the tower.