I couldn't enter the facility, but I could see Char's Zaku from the outside.
This is a digital diorama I made by hand.
I removed the moving Gundam from the background, took a picture from an angle looking up at the Zaku, added some weathering, and added white reflections and black shadows to match the background and the Zaku's color scheme.
This is AI, it's incredibly realistic! But it has a lot of scratches.

A moving Char's Zaku in Yokohama | ファーラ's Gunpla works