An ancient Greek metope from the Parthenon in Athens made between 447–438 BC by Phidias (or at least overseen by him). "Centaur and Lapith tussle like wrestlers. The Centaur has his opponent by the throat, while the Lapith attempts to fend him off with a fist and a knee. The Centaur opens his mouth with the pain and bares his teeth. His face is evocative of an ancient Greek theatre mask and his hair resembles a wig.

SOUTH METOPE XXXI" Per the British Museum in London where this stunning artwork, along with other sculptures from the Parthenon, is on display. 

They were removed in the early 19th century by Thomas Bruce, 7th Earl of Elgin (the U.K. Ambassador at the time) during the Ottoman occupation of Greece - and due to them being a national treasure and the controversial circumstances of their removal, Greeks have demanded their return to Athens over 100 years. While there have been many talks with the UK government over the years including long term loans, nothing has been agreed on. If you want to see all the artwork and sculptures from the Parthenon like I have, you currently would need to visit the Acropolis Museum (Athens, Greece) and The British Museum (London, UK), where most of the pieces are, in addition to smaller portions in France, Denmark, Germany and Austria. Italy returned its fragment in 2022 to Greece and Vatican City returned several fragments in 2023.

An ancient Greek metope from the Parthenon in Athens now in the British Musuem in London