What was the purpose of the pyramids besides tombs for Pharaohs?

They were a house for the pharaohs so that when they ''come back to life'', they would have a place to stay before they're ''taken to heaven'', and did you know they used to bury all their possessions with the body. And also for beauty.

The ancient Egyptians built pyramids as tombs for the pharaohs and their queens. The pharaohs were buried in pyramids of many different shapes and sizes from before the beginning of the Old Kingdom to the end of the Middle Kingdom. There are about eighty pyramids known today from ancient Egypt.