Olmec, Aztec, Mayan and other artifacts are ... One emblematic example is Moctezuma's headdress, a unique piece made of quetzal feathers, now housed in the Weltmuseum in Vienna.

Olmec masks have been intriguing historians ... and it's much more likely that you'd have worn this round your neck or in a headdress, possibly for some kind of ceremony. Small holes have been ...