 The ceremonial feathered headdress or "quetzalāpanecayōtl" that was worn by Montezuma II (the last reigning emperor) was seized by the Spanish Conquistadors in c. 1520 and sent back to Charles V, Holy Roman Emperor and King of Spain as a gift.Remarkably, it still survives and Montezuma's headdress can be seen at the Museum of Ethnology, Vienna (inventory number 10402VO) along with other ancient Mexican artifacts.Setting aside the artifacts of Aztec and Spanish rule, there are also extant remnants of the imperial regalia of the First Mexican Empire and Second Mexican Empire.