Many other Greek islands had cities, ports and temples in antiquity. Due to the encroachment of time, and the depredations of latter men by building over them, using them for construction materials, destroying them as conquerors or carting off the statues and monuments for decorative or speculative purposes, they unfortunately have less to show of themselves. Many artifacts may be found as parts of collections throughout the museums and private collections of this world. Including island museums in Greece and the National Archeology Museum in Athens and Heraklion, Crete. (right ivory statuette 7th c BC Samos archeology museum)
One particularly interesting such ancient site, although not much to look at, is the Eupalineion or aqueduct of Samos (524 BC), initiated by Polycrates and built by Eupalinos of Megara. Basically this is a tunnel 1,150 yards long running through Mt. Ampleos which carried water to a reservoir in the middle of the city. What's remarkable about it is, it was begun at both ends simultaneously and joined up perfectly with its other half under the mountain. It probably took 10 to 15 years to dig through solid rock. This is without modern surveying equipment mind you. No one is sure to this day how it was accomplished but it assured the cites water supply during times of siege and was also used as an escape route by Meandrius during Darius' encirclement and blockade. A maintenance ledge runs within the long and narrow tunnel above the water channel. Flashlight helpful. Herodotus in his Histories also credits Samos with 2 other great works, the mole of the harbor and the Temple of Hera (mostly a ruin unfortunately).