Reviewed · ACROPOLIS & ANCIENT GREEK TEMPLE TOURS
Private Rib Cruise to Poseidon Temple at Sounio Cape
The best part of this day is the combination of fast RIB cruising and quiet island swimming. You leave central Athens by minivan, reach the water at Lagonissi, and trade city traffic for open sea, small uninhabited islands, and a temple perched above the southern tip of Attica.
I especially like the chance to snorkel inside the cave at Arsida and the way the crew adjusts the plan when wind makes the original route unsafe. George, the host, has earned praise for careful planning, friendly service, and wide-ranging stories about Greece. The main drawback is the price: at $589 per person, this makes the most sense for a small private group that will use the boat time fully.
Key points at a glance

- Swim at Arsida’s sea cave: Snorkel and swim at a memorable natural stop rather than simply looking at the coast from the boat.
- Reach Poseidon’s Temple by sea and road: The weather may determine whether you sail all the way to Sounio or visit by minivan after the cruise.
- Private group of up to eight: You get personal attention and can tell the crew when you want more swimming, paddling, or quiet time.
- George brings local stories: Expect information about Sounio, modern Greek history, and even a World War II memorial along the scenic coastal route.
- Snacks and equipment are included: Bring towels and sun lotion, but snorkel gear, water, fruit, and light refreshments are supplied.
- Wind matters: A rough day can shorten the swimming portion or change the route, though the crew has shown it can make a sensible alternative plan.
From your Athens hotel to Lagonissi

Your day begins with pickup at your hotel in the Athens region. An air-conditioned minivan takes you to Lagonissi, where you board the RIB, a rigid inflatable boat built for speed and open-water travel.
This transfer is more than a minor convenience. You do not need to arrange a taxi to a distant marina, and you can leave your hotel with swim gear already packed. Give the operator your hotel name and address when booking, then meet the driver in the lobby.
The full outing lasts about seven hours. That sounds generous, but the clock includes the hotel transfer, time on the water, the temple visit, and the return drive. You should think of this as a full-day outing rather than a short boat ride tacked onto an Athens sightseeing schedule.
Once aboard, the captain follows the Attica coast toward small islands such as Arsida, Pothitos, Fleves, or Patroklos. The route is not a fixed sightseeing circuit in the usual sense. Wind and sea conditions matter, and the crew may choose a more sheltered area if the water becomes uncomfortable.
That flexibility is useful. On one windy day, the boat did not continue toward Poseidon’s Temple by sea. Instead, the group spent time swimming, snorkeling, and paddle boarding closer to Athens, even seeing a sunken shipwreck, before reaching Sounio by road. You should not treat a changed route as a failed tour. On the water, a safe and pleasant plan is better than forcing a long crossing.
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Swimming and snorkeling around Arsida

The sea portion is the heart of the experience. At Arsida, you can swim and snorkel near a cave, then continue to one of the other small islands for a sandy beach and more time in the water.
You will see a quieter side of the Athenian Riviera here. These islands are uninhabited, so there are no town streets, cafés, or rows of beach chairs. The appeal is simple: clear water, rocky shorelines, open sun, and a pause from Athens.
The crew provides snorkel equipment, and an underwater camera is available if you want photographs or video of the outing. The footage can be given to you at the end at no extra charge. This is a thoughtful touch, especially if you are traveling with children who want something tangible from the day.
You can also ask about a scuba program or an introductory scuba experience for an additional fee. That option is not part of the listed price, so arrange it in advance rather than assuming it will be available on the boat.
The sea is described as safe, without dangerous marine life or strong currents. Still, conditions vary. Water temperature can feel cool outside the hottest summer weeks. One June outing had water around 21 degrees Celsius, with wetsuits available when needed. Pack a towel, sun lotion, swimsuit, sunglasses, and a hat. A light jacket is sensible outside the warmest months.
The RIB itself adds excitement. The boat moves quickly along the coast, and children and teenagers may enjoy the speed as much as the swimming. It is not a quiet yacht cruise, though. If you want a slow, shaded sail with little motion, this is not the right style of boat.
How the crew shapes the private day

A private boat changes the feel of the outing. You are not following a large group on a rigid schedule, and the crew can ask what matters most to you. You can spend longer in the water, move on sooner, or favor a sheltered cove when conditions change.
George has been praised for being warm, attentive, and well informed about both ancient and modern Greece. He has also helped shape the day before departure by offering practical suggestions. On the boat, he and the skipper make a point of checking what you want and helping with swimming and snorkeling.
That personal service matters most if your group has mixed interests. One person may want to snorkel, another may prefer floating in the water, and someone else may want to sit in the sun. The private format gives the crew room to accommodate those differences.
The experience can also work well for families. The boat crew has been patient with children learning to snorkel, and wetsuits may be available if the water feels cool. Still, the cruise is not suitable for children under five, all children must be accompanied by an adult, and unaccompanied minors are not allowed.
The maximum is eight people per booking. That is small enough for direct attention, but it also explains the cost. At $589 per person, the outing is a major expense for a couple or a small family. For a full group that divides the private boat cost across several people, the value becomes easier to defend.
Snacks, fruit, and the practical rhythm of the boat

Light refreshments, bottled water, snacks, and fresh fruit are included. That keeps you going between swims, but lunch is not included, so do not expect a full meal on board.
The food is best viewed as useful fuel rather than a dining experience. You will want breakfast before pickup, especially if you are traveling with children. If you have dietary needs, ask about them before the tour because no special arrangements are stated in the available information.
Bring only what you need. Towels and sun lotion are specifically recommended, along with swimwear, a hat, and sunglasses. A light jacket helps when the boat is moving quickly or the weather turns cooler.
Alcohol and drugs are not allowed. The operator also notes that wheelchair users cannot take this tour. The RIB, swimming stops, minivan transfer, and temple access make this a physically active day, even though the pace can be adjusted within reason.
Weather deserves a place in your planning. A cloudy or rainy day can reduce the pleasure of swimming, and wind can alter the route. The crew has used sheltered areas and changed the transportation plan when necessary, but no boat operator can guarantee calm water or warm sunshine.
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Reaching Poseidon’s Temple at Sounio

After the sea time, you head for Cape Sounio and the Temple of Poseidon. Sounio marks the southern end of Attica and the far point of the Athenian Riviera, about 69 kilometers from Athens.
The temple ruins sit on a headland with the sea on three sides. That setting explains why the site remains so memorable even after many columns have disappeared. You are not looking at an isolated pile of ancient stones. You are seeing a sanctuary placed where land, sky, and sea meet.
The temple was dedicated to Poseidon, the ancient Greek god of the sea. Its position made practical and symbolic sense for people connected to maritime travel. From the headland, the view stretches across the surrounding water and gives the site its drama.
The ruins also carry a more modern mark. Lord Byron, the English Romantic poet, carved his name into one of the stones. It is not a detail to celebrate, but it is part of the site’s later story and a reminder that famous visitors have been leaving their traces at ancient places for centuries.
Entrance fees are included. The host may provide your tickets and let you explore independently rather than giving a formal guided walk through every column. That can be a benefit if you want time for photographs and views, but it is worth knowing if you expect a full archaeological lecture inside the site.
George can add context before or after the visit. His stories have included lesser-known World War II events in Greece, including a stop at a monument for Italian soldiers killed by German forces after their surrender. The exact stops may depend on timing and the day’s route, but the broader point is useful: this outing connects ancient Sounio with the more recent history along the coast.
The temple is often windy, even when Athens feels calm. Hold onto hats and secure loose items. The views are a major reason to come, but strong wind may affect how long you want to stay on the headland.
The return drive and the value of the private format

After the temple, you return to your Athens hotel by minivan. If the boat cannot sail all the way to Sounio, this road segment becomes an important part of the day rather than a backup afterthought.
The coastal route gives you a different view of Attica than the sea crossing. You can sit back while the host shares local stories, and the air-conditioned vehicle is welcome after hours in the sun.
Some outings have lasted longer than the advertised seven hours when the schedule and conditions allowed. You should not count on extra time, but the crew appears willing to make the day feel complete rather than rushing you off the boat at a strict cutoff.
One useful extra is local food advice at the end of the outing. The crew has recommended a restaurant and even helped with ordering. That is not listed as a guaranteed part of the tour, so treat it as a possible kindness, not a promised service.
The private format is the real value here. You are paying for a boat, captain, transfers, entrance fees, equipment, and a host who can adapt the day. If you only want to see the temple, a standard road trip will cost less. If you want swimming, snorkeling, island stops, and a personal coastal guide in the same day, the higher price has a clearer purpose.
Who should book this cruise

I would choose this for a small family, a group of friends, or a couple who values privacy and wants more than a standard Athens sightseeing day. It suits people who like active outings but do not want to plan several separate transfers.
Families should note the age limit and the physical nature of the boat. Children need to be comfortable around open water, and everyone should be ready for sun, wind, and a possible change in plans.
This is also a good choice if you have already seen central Athens and want a day outside the city. You get sea time, a taste of the Athenian Riviera, and one of Greece’s most striking ancient sites without arranging the transport yourself.
I would hesitate if you dislike speedboats, get uncomfortable in choppy water, or need wheelchair access. I would also compare the price carefully if your group has only two people and your main goal is the temple. The boat portion is what justifies the cost, so book only if you genuinely want the swimming and island time.
Should you book it?

Book this private cruise if you want your Poseidon’s Temple visit paired with real time on the water, rather than a simple drive to the ruins. The strongest reasons are the Arsida cave, the flexible route, the attentive crew, and the chance to hear George’s stories along the coast.
Before booking, check the weather forecast, bring a towel and sun protection, and confirm that everyone in your group is happy with a fast RIB ride. If the sea is rough, expect the itinerary to change. For a group of up to eight that wants an active, personal day, this is a costly but well-rounded way to experience southern Attica.
FAQ

How long does the private Poseidon Temple cruise last?
The experience lasts seven hours, including pickup from your Athens hotel, the minivan transfer to Lagonissi, time on the RIB, the temple visit, and the return transfer.
Where does the tour pick me up?
Pickup is provided from your hotel in the Athens region. You should provide the hotel name and address and meet the driver in the hotel lobby.
What islands might the boat visit?
The route may include Arsida, Pothitos, Fleves, or Patroklos. These are small, uninhabited islands with remote sandy beaches.
Can I snorkel during the cruise?
Yes. Snorkel equipment is included, and you can swim and snorkel at Arsida’s cave. A scuba or introductory scuba program may be arranged for an additional fee.
Is the snorkeling equipment included?
Yes. Snorkel equipment, bottled water, light refreshments, snacks, and fresh fruit are included.
Is lunch included?
No. Lunch and personal expenses are not included.
How many people can join the private group?
A maximum of eight people can be included in one booking.
Is the tour suitable for young children or wheelchair users?
The cruise is not suitable for children under five. Children must be accompanied by an adult, and unaccompanied minors are not allowed. The activity is not suitable for wheelchair users.
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