The Egyptian pyramids are some of the most fascinating structures in the world.
Although they are popular tourist attractions today, the pyramids were originally built as tombs for ancient Egyptian kings.
At the time, it was customary to mummify dead rulers and bury them with their possessions.
However, many pyramids have been robbed throughout history, and most are empty today.
The first known pyramid was built around 2600 B.C, for a king named Djoser.
The largest and most famous Egyptian pyramids – the Great Pyramids of Giza – were built between 2500 and 2400 B.C, and there is still a lot of mystery surrounding their construction.
It would have been very difficult to build such massive structures without modern technology.
Historians believe that at least 20,000 workers were needed to complete the Great Pyramids.