Stranger Things filmed at Lukiskes Prison, Vilnius. A former Vilnius prison, active until 2019, provided real cell blocks for Hopper's detention scenes. On screen it's Siberian prison.
Probable Named in published production coverage; the coordinate is the place itself, checked against a gazetteer.
Planning the trip? everything filmed in Vilnius is on one page
Venture keeps every scene location on one map, sorted by how far you'd have to walk. Open it in Vilnius and it tells you what was shot around you, how to get there, and whether you can actually go in.
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