Attica is full of small and large beaches waiting for you to enjoy moments of coolness and relaxation. Others are more, and others are less well-known beaches, and you may find more or fewer people there. Some of you may not even have heard of them, and you’ve never been there to enjoy your swim. This is probably the case with a hidden beach in Attica. It’s a beach you’re actually swimming on. This means that it is not a beach easily accessible to everyone, but at the same time, it means that you will not find many people, and you will enjoy swimming in clear, crystal clear waters.
The hidden beach of Attica, next to Althea
The beach we are talking about is right next to the beach of Althea under the Avenue of Athens – Sounio. It is not an unnamed beach, which we simply call it a ‘hidden beach next to Althea’. It is a beach with turquoise waters and fine pebbles along with sand. The main feature of the beach is the large cave that it has.
You won’t find much shade unless you leave your things in the shadow created by the rock, which is there. It is also a beach that is not affected by the winds, and you can enjoy your swim there in calm waters. If you want to approach it, of course, as we said, you’re going to have to go swimming… Or by boat.
If you want to go swimming, you’ll need just five minutes from Althea Beach to get there. What is certain is that the crystal clear waters and the quietness of the beach will reward you. See HERE the hidden beach of Attica next to Althea.

Swimming in Althea
The beach of Althea is one of the most beautiful beaches of Attica, with turquoise waters and an idyllic landscape. It is a heavenly place, a breath away from Athens and actually 40 minutes away.
Regarding access to Althea beach, keep in mind that on the way, you will see the church of Agia Marina, and then wait to see a sign with the name Althea. That’s where you’ll see an alley. The alley leads you to the little paradise. In fact, it leads you to a small parking lot where you can leave your car.
External photography source: Google Maps
Read also:
The beaches of Attica that offer you natural shade
Mikro Pilio: The hidden blue beach of Attica
Kavo-Skili: The unknown tropical paradise of Attica
Frequently Asked Questions
The hidden beach next to Althea is located in the Keratea area of Attica, positioned right beside Althea beach under the Athens-Sounio Avenue. It's situated approximately 40 minutes from Athens and is accessible by swimming about five minutes from Althea beach or by boat.
The hidden beach features crystal clear turquoise waters, fine pebbles mixed with sand, and a large distinctive cave. It's protected from winds, offering calm swimming conditions, and remains uncrowded since it's not easily accessible to everyone, making it an ideal secluded destination for peaceful swimming.
To reach the hidden beach, you can swim for approximately five minutes from Althea beach, or you can arrive by boat. Since it's not directly accessible by land, swimming is the primary method of access for most visitors.
Shade is limited at the hidden beach. The main shelter option is the shadow created by the rocks naturally present on the beach. However, the cave formation on the beach may also provide some shaded areas.
Althea beach is located about 40 minutes from Athens via the Athens-Sounio road. When traveling, look for the church of Agia Marina as a landmark, then watch for the Althea sign. Follow the alley that leads to a small parking lot where you can park your car before accessing the beach.










