There is probably no such thing as bubble architecture, but that’s the term I use to describe it.
Particularly in France you can find many examples of old, historical buildings that are then protected, modernized, and expanded by encasing them in a glass enclosure. The Gare Centrale of Strasbourg is probably the most famous example – and I’ll post a blog that shows it someday.
And here is another example,
And here is the plaque outside that describes what has now become of the very historical Aubette building, which used to be a military barracks: