An Ionic masterpiece
The Erechtheion is an Ionic masterpiece that was built 421-406 BC and it's the most famous temple - the famous tribune of the Caryatids. It's a polychrome portico with 6 columns (originally) with female figures, all the figures are copies, 5 of the originals are in the Acropolis Museum and the last is in the British Museum, London. The realization of this porch was a currency for the time to be used in place of columns the "caryatids".