Various courts and gates mark different reigns and historical eras but I'll admit my knowledge of Thai history is pretty scant. Most of what I know is based on the movie The King and I, but we did happen to see the royal court room where the dancing takes place (well, where it did in real life...not where they filmed it.)
It was opulent beyond anything I've ever seen before. The buildings were coated in gold leaf, colored glass and gemstones, and porcelain and enameled surfaces polished to a shine. Every available inch of space was covered in something that gleamed or an intricately detailed flourish. Near the end of our tour it was almost too much to take in any more. See for yourself.