Tours of the exhibition hall are guided only, since there are a number of multi-media 'production numbers' along the way. The first of these is probably the most impressive, although it's trick is so subtle I suspect most visitors don't even know what it's doing. I won't spoil the surprise. Just keep an eye on the ceiling.
The following galleries house displays about the Grand Palace and the performing arts. The performing arts gallery includes a 360-degree theater with a video presentation as well as some fine examples of Khon masks.