Park Models are designed to be put in place and remain stationary. Unlike a travel trailer that is moved at whim.
A Park Model will usually have a full size refrigerator, and you can spot them easily because the front entrance door is sometimes a sliding door (like in a house).
Park Models normally do not have black and gray holding tanks (although some do), the kind that looks more like a trailer than a house. You need to hard plum your sewer line. You can use flexible hose, but once you connect it, you don't normally remove it.
Park Models normally come with real bath tubs, real toilets (not the push peddle toilets), and real furniture. A Park Model is a smaller version of a mobile home, but still meets the criteria for (camper).
I've seen basically 2 types of Park Models. 1). Those that look like a house on wheels, and 2). Those that look like a travel trailer on wheels.
You can always spot a Park Model by the door. Usually larger than a travel trailer and usually a sliding patio door. And usually has a full size front window. Travel trailer manufacturers have gotten away from the front window (over the tongue).
Here's a "Bing" link to some images. I think you'll see the difference immediately:
Click here.Actually, if your camper is going to sit and not be moved, a Park Model is a VERY good choice. You'll enjoy it much more than a standard Travel Trailer.