How did the Maya build temples and pyramids without metal tools?

The ancient Maya were able to construct their impressive temples and pyramids without the use of metal tools by utilizing stone-based technology. To quarry the immense quantities of building stone required for their cities—typically limestone—the Maya employed harder stones, such as chert, to cut and shape the material.1

These architectural feats were generally designed as earth mounds faced with stone blocks. By using these stone-on-stone techniques, the Maya were able to create sophisticated ceremonial centers, palaces, and pyramid temples that defined their urban landscapes during the Classic Period.21