Found at the base of a spectacular red volcanic cliff, Ammoudi is essentially the port for the town of Oia, which is found roughly 150m above, on the volcano rim.
Ammoudi is a tiny settlement and contains a only few tavernas, a variety of local fishing boats, along with a small fine-pebbled beach.
Tourist boats leave daily from Ammoudi to the island of Thirassia and the volcanic island of Nea Kameni, both of which are a must-see on the Santorini tourist route.
If you are feeling energetic you can reach Ammoudi by descending more than 300 steps from the village of Oia, although the port can also be reached by car. Its very nice place to visit and you can stay and eat fresh seafood in the small taverns there.
Some people are swimming there but its a little bit dangerous from the rocks.