The pharaoh's final resting place was usually within a burial chamber underneath the pyramid. Although the Great Pyramid has subterranean chambers, they were never completed, and Khufu's sarcophagus rests in the King's Chamber, where Napoleon is said to have sojourned, deep inside the Great Pyramid.
There's one burial chamber inside the Pyramid of Khafre, which was carved out of a pit in the bedrock. This burial chamber also contains a large sarcophagus as well as the vessels in which the internal organs of the rulers were kept, which is more than what was found inside of Khufu Pyramid.