What are those BIG signs most restaurants and hotels have that are lit up at night?

You can see them from a ways off. It's basically the logo and it's WAAAAAY up in the air and they double as a light at night. The marquee is usually underneath it for restaurants.What are those BIG signs most restaurants and hotels have that are lit up at night?
Neon signs? Billboards with lighting?

I'm not sure what you're asking. The best I can say is it is evidently good advertising since you are noticing it.