Half Day Trip to Cape Sounion, Temple of Poseidon & Lake Vouliagmeni
During my two-week trip to Greece, which also included some of the Greek Islands like Santorini and Agistri, I set aside time for a half day trip to Cape Sounion. It turned out to be one of the most memorable experiences of my journey. Between ancient ruins, a natural spa, and beautiful views, this is one of the best Cape Sounion tours you can take.
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How to Get to Cape Sounion
You can start a Cape Sounion day trip either from Athens or directly from the airport. I did the latter, arranging a private tour with George Papatheodorou’s taxi service. George picked me up at the airport and drove me along the Athenian Riviera while sharing stories, history, and insider tips. His knowledge added so much depth to the experience, and having the flexibility of a private trip made it stress-free. I highly recommend booking a private tour with him!
For travelers who prefer structured outings, there are plenty of Cape Sounion tours to choose from. Many tours to the Temple of Poseidon include hotel pick-up, guided commentary, and optional sunset stops. Private tours, group buses, and half-day trips all follow a similar route along the coast.
Cape Sounion and Temple of Poseidon
You’ll often see this area called both Cape Sounion and Cape Sounio, but don’t get confused; they refer to the same place. The difference comes down to translation and spelling. Sounion is closer to the original Greek name (Σούνιο), while Sounio is the more modern and commonly used form you’ll see on road signs, maps, and tour listings. Travelers will find both terms used interchangeably.
Regardless of the spelling, they both point to the southernmost tip of the Attica peninsula, where cliffs drop into the Aegean Sea. This beautiful place is home to the Temple of Poseidon, the highlight of any visit to the area.
Built in the 5th century BC, the temple was dedicated to Poseidon, god of the sea, and served as a landmark for sailors. What fascinated me most is how this temple connects with two others—the Parthenon in Athens and the Temple of Aphaia on Aegina. Together, they form a perfect triangle across the landscape. The Greeks didn’t use geometry to achieve this; instead, they relied on the stars to align their sacred sites. It was a great first visit to a historic site near Athens, and it would be the start of some great history.
The views are another highlight. From the cliff, the Aegean stretches endlessly, and it’s easy to understand why so many visitors combine Cape Sounion and the Temple of Poseidon into a half-day itinerary. Even outside of the famous sunset tours, the light reflecting off the sea is unforgettable.
Lunch by the Sea
After exploring the temple, we stopped for a meal at 4 Brothers (Τα 4 Aderfia). I was sitting at a table right by the water, and it was the perfect place to relax with fresh Greek dishes before continuing. Another popular option along this route is Old Fokaia, a quiet beachfront village where you can enjoy a less touristy lunch.
Lake Vouliagmeni
The next stop was Lake Vouliagmeni, a unique natural spa located amongst the most beautiful limestone cliffs. What makes it extraordinary is the system of underground caves beneath it.
Hidden below the surface is one of the largest underwater cave systems in the world. Divers have mapped tunnels stretching more than 3,000 meters (almost two miles), though the full extent of the network is still unknown. Some passages run so deep and narrow that they remain unexplored, adding a sense of mystery to the lake. Stalactites have even been discovered inside these underwater caverns, proving they were once dry before the area collapsed and filled with water thousands of years ago.
The lake itself is fed by both seawater and underground thermal springs, keeping the temperature mild year-round—usually between 22–29°C (72–84°F). Its mineral-rich waters are believed to have therapeutic properties, which is why you’ll often see locals swimming laps alongside visitors soaking in the calm pool.
Entry fees vary (generally €12–15), and there are sunbeds, changing rooms, and a café onsite, making it easy to spend a few hours here if you want. Whether you swim in the healing waters, explore the spa facilities, or simply pause for photos, Lake Vouliagmeni is a refreshing contrast to the ancient ruins at Cape Sounion and Temple of Poseidon. It was a beautiful place to stop for photos!
Lycabettus Hill
As we headed back to Athens, with my guide telling me stories on sites along the way, before ending the tour, we drove to Lycabettus Hill. This is one of the best viewpoints in Athens. From here, you get a panoramic “bird’s-eye view” of the city, stretching from the Acropolis to the sea. It was a stunning way to finish a half-day trip!
FAQs About a Half Day Trip to Cape Sounion
Final Thoughts on visiting Cape Sounion
A half-day trip to Cape Sounion and the Temple of Poseidon offers more than just ancient ruins. It’s a visit out of the chaotic city, which blends mythology, coastal scenery, and a relaxing stop at Lake Vouliagmeni. Whether you book a private driver, like I did, or join one of the many Cape Sounion tours, this experience is an easy and unforgettable way to explore another option from a walking tour in Athens.
If you’re planning a longer itinerary, I highly recommend weaving it into your travels—it was the perfect addition to my Greece adventure.
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