What are the materials of European classical architecture?

I'm also interested, but I only know a little about the interior decoration (not outdoor relief) of European 17, 18 and 19 th century palaces (such as Versailles, Hofburg Palace, Worry-Free Palace, Sch? nbrunn Palace and Summer Palace). ), such as baroque decorative patterns carved on doors, beds, walls and ceilings. I don't know much about it either. Occasionally, I learned about interior decoration through TV and novels. There are many wooden, copper, silver and even gold materials in the west, iron, which can't be found on the internet, only know these.