Three interesting facts I learned were:
1. Pyramids were built so that each side faced exactly north, south, east and west which is called cardinal direction.
2. There were plenty of things inside pyramid chambers: hieroglyphs and hieroglyphic writing on walls (including hymns, magical spells, instructions on how to act in front of the gods and other useful knowledge known as Pyramid Texts), potter vases-some containing wine and expensive perfumes, furniture for pharaohs to use in the afterlife, stars on the ceiling to symbolize the heavens, and sometimes even one or more boats were buried near the pyramid, possibly for the king’s pleasure in the next world or to allow him to sail across the sky.
3. The Bent Pyramid was known as the first true pyramid with sloping sides but it's also unique because the structure bends halfway up. The reason why it bends has been argued and is still a mystery. Some theories are that it was a calculation error, it was part of a new design, or it started to collapse halfway up so it had to be finished at a different angle.
