If you work your way upwards through the white-washed alleyways of Ios Chora, you will soon find the path climbing up to the serene eighteenth century Church Panagia Gremiotissa. Catch your breath and admire the view from the shady flagstone courtyard before taking the steps up to trio of chapels overlooking the church. From the highest chapel, you'll have commanding views across the town, the harbour and the terrace hills of Ios. You should be able to make out the ruins of the Bronze age settlement of Skarkou in the distance. Best to do this walk in the morning (when it is cooler) or in the evening to catch the sunset (potentially with dozens of others).