[card_zero]

Eiffel tower: 10,000 tons

Great pyramid: 5 or 6 million tons

So only around 500 times as much moving material around, feasible I guess. You might need a dedicated rail line built direct to the quarry.

Funny to mention cathedrals considering that they finished one in Spain just recently. There's also Guédelon Castle in France, still being slowly built.

[AngryData]

To be fair you got to also move a lot of ore to refine that metal. But there was also a lot of mechanically generated power used to get it.

[marshray]

For anyone interested in modern humans' ability to move material around when it is economically advantageous to do so, try a web image search for "largest open pit mines".

[sscaryterry]

There is a big difference though between placing blocks precisely, and running dump trucks.

[marshray]

Look up a photo of one of the large mining trucks and compare it to the size of the blocks used in the Egyptian pyramids.

Working with blocks of this size is just not a problem for modern equipment.