Although we may use the word sight a lot more often than site or cite, it is worth knowing the difference between them!

Cite: to mention or quote a document or legal result.
He cited Judge Brown’s findings from case 32.

Site: a relevant place or piece of ground. It includes a construction site (where building works are taking place), a sacred site (a place of significant meaning to some people) and a crime site (the area where an activity took place, in this case an illegal activity).
They chose the best site for their sleeping tent.

Sight: the ability to see and what is seen.
Sight is one of the five senses.
It was a magnificent sight from the lookout.
Site is easy to remember if you think of a site being a place where you can sit.