The Mayan pyramids and temples were made from limestone.
The Maya people managed to develop large city-states around limestone-stepped pyramids and other monumental buildings even though there were not any sort of metal tools or wheels to transport large limestone blocks. So we may say that limestone was a key element in the Mayan architecture: roads, for example, were made of rock and covered in cement mixed from heated limestone. And the walls of their pyramids were faced with adobe bricks, and covered with limestone as well.