The court building is of the Victorian Arcitecture and it is very much like that inside as well in most of the court rooms. There are many rooms inside some specialising in certain matters.
It is customary to rise up when the judge or magistrates enter the court room as a sign of respect.
You can go visit the court for free, but you will have to accept being searched for any unwanted items within by passing through a metal detecting machine, but you will get back you items later on.
Some of the rooms have screening before you so it can be hard to hear what the lawyers are saying, which is a downside if you are going there as an observe to learn for your studies etc read more