The main part of the temple is like what you can see on photos. And it looks a lot smaller when you are there seeing it! It is still a very unique building though but one probably needs only 15 - 20 minutes max to walk around the main part.
The actual highlight is the temple around the main building. It is worh spendng 30 minutes after visiting the main building to walk around the site as there are at least 2 other temples with monks and worshipers.