The Great Pyramid of Giza is a wonder of the ancient world, last of the seven standing.
Hundreds of years before it was built, they built the Step Pyramid at Saqqara.
I found it more impressive in some ways as the site is further from honking horns and the hustle and bustle of modern Egypt.
The remaining walls are a marvel of construction, nearly seamless.
The pyramid is in shambles, but... It is the oldest monumental stone structure *in the world*. Maybe it's allowed to look a little worn down.
Someone mentioned to me that Cleopatra (30 BC) lived closer to the advent of cellphones (1980?) than to the building of this pyramid (2,650 BC). Mind: blown
The murals and hieroglyphs that are on some tomb walls are remarkably well preserved.