Do some research on built up moldings, "real" wainscoating (NOT that junk that comes in sheets), wide hardwood (or softwood) door casings with rosettes, hardwood floors (NOT that pergo and similar fake stuff), etc., etc.
There are companies out there that will make custom router bits and rosette cutters, etc., etc so you can match any old style you prefer.
Another thought is to research companies that have torn down the older Victorian style homes and have salvaged the interior and exterior trim pieces. Most all of the wood is "old growth" with tight annular rings and as solid as the day it was harvested. They're on the net.
You can purchase the old tin or copper ceilings as well.
Find a design you like, take pictures if possible and that'll be a great starting point.
Be forewarned, though. If you plan on having an "old style" house designed/built, chances are you'll be facing a price someplace in the neighborhood of 200 dollars per square foot. You won't get what you're looking for from most of the contractors around here. Most of them will either tell you flat out "no way" or will highball the price to cover their ineptitude/time constraints on building a house like this.