You could use a graphic override rule and create a transparant surface. I'd start by creating one of the 'basic' glass materials from the surface library and adjust that. Apply it to the whole of the curtainwall by overriding the surface. Just add some filters to the rule to single out your preferred curtainwall (easiest is probably to go for 'element ID' and 'element type').
You could also try using the cutting planes instead, cut back a little bit of the model and place your camera to show what is inside.
BIMx (possibly with a saved camera path) could also be a nice way to present the interiors.
Erwin Edel, Project Lead, Leloup Architecten
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