Sail from Kastelli across Kissamos Bay to the fortified rock of Imeri Gramvousa, then unwind in the shallow turquoise waters of Balos lagoon. This full-day cruise combines easy swims, a short hike to a Venetian fort and spectacular coastal scenery.
More ways to explore the area's outdoor wonders
The motor lifts, spray stitches the air, and Kissamos falls away as the boat crosses Kissamos Bay toward dramatic cliffs and hidden coves. Ahead, Imeri Gramvousa rises like a weathered fortress: sheer rock faces give way to a patch of white sand and the squat remains of a Venetian fort that rewards a short climb with a panoramic sweep over the Aegean.
Difficulty
easy
Duration
8 hours
Fitness Level
Suitable for most travelers; short walks and a moderate climb to the fort are required
Wildlife
History
Imeri Gramvousa’s Venetian fort occupies a strategic position used for coastal defense and, historically, as a shelter for pirates and refugees during Ottoman-Venetian conflicts.
Conservation
Balos is a sensitive lagoon system; visitors should avoid trampling dune plants and pack out all waste to protect nesting birds and fragile sandbars.
Reserve your spot on the Gramvousa Islands Boat Cruise today and enjoy a trusted, highly rated experience designed to help you make the most of your adventure.
Arrive Early at the Port
Be at Kastelli at least 60 minutes before departure to handle ticketing and boarding—transfers from some hotels can add time.
Sun Protection Is Non-Negotiable
There’s minimal shade on deck and at Balos—bring high-SPF sunscreen, a wide-brim hat and UV sunglasses.
Footwear for the Fort
Wear sturdy sandals or light hiking shoes for the rocky ascent to the Venetian fort; the path is uneven and can be hot.
Pack a Dry Bag
Protect phone, wallet and camera from spray; a small dry bag keeps valuables safe while swimming or on deck.
Swimwear & Towel
Necessary for swimming at Gramvousa and Balos during the trip.
summer
Sunscreen (SPF 30+)
Protects against strong Mediterranean sun on deck and at the lagoon.
summer
Sturdy Sandals or Light Hiking Shoes
Useful for climbing uneven stone steps to the Venetian fort.
Dry Bag or Waterproof Phone Case
Keeps electronics and documents dry from spray and when swimming.