Bactria was under direct Greek control for more than two centuries from the conquests of Alexander the Great in 332 BC to the end of the Greco-Bactrian kingdom around 125 BC. The art of Bactria was almost perfectly Hellenistic as shown by the archaeological remains of Greco-Bactrian cities such as Alexandria on the Oxus (Ai-Khanoum), or the numismatic art of the Greco-Bactrian kings, often considered as the best of the Hellenistic world, and including the largest silver and gold coins ever minted by the Greeks.