An arched gateway in the Old City wall leads from İçeri Şəhər metro station to a pretty handkerchief of garden. It's dominated by the imaginative bust of poet Vahid incorporating characters from his work into the lines of his hair. Yay Gallery offers changing 21st-century art exhibits. A tiny 14th-century mosque hosts a one-room coin museum featuring ancient coins. And around the corner is a passingly curious Museum of Miniature Books .