Notice the size of the stones vs the two sitting people.
It takes about half an hour to climb to the top, as this photographer can attest to.
It was scarier to decent than to ascent. Nowadays you can't do this anymore.
The Great Pyramid of Cheops was built over 4000 year ago by Pharaoh Khufu.
It stands at 146 meters (479 ft), in Giza, the suburbs of Cairo.