I visited the sprawling 'metroburb' where 'Severance' is filmed. It's a 2 million-square-foot town under one roof.

I visited the sprawling 'metroburb' where 'Severance' is filmed. It's a 2 million-square-foot town under one roof.

Bell Works was a fun place to visit.Gabbi Shaw/Business InsiderLumon, the sinister corporation at the heart of the Apple TV+ series "Severance," isn't real.But the somewhat menacing building that Lumon operates from is — and it's just 40 miles outside NYC.In real life, it's Bell Works, the former home of Bell Labs and now a "metroburb."Be honest: Have you ever fired up Apple TV+ to watch an episode of "Severance," which took home eight Emmy Awar…