The 6 Most Beautiful Sea Caves of Polignano a Mare

We start with the most famous and photographed: Grotta Palazzese. Known in ancient times as "Palazzo Cave", this immense natural cavity is world-renowned for housing one of the planet's most exclusive restaurants. But beyond the luxury, the cave itself is a masterpiece of nature.

The vault soars high, allowing light to enter dramatically, illuminating water that shifts from turquoise to deep emerald. The part accessible by sea lets you admire the grandeur of the rocky structure. History and nature merge here: in the 18th century, local nobles held lavish banquets inside — a tradition that lives on in a modern, sophisticated form today.

Continuing south, we reach one of the most romantic stops: Grotta dell'Amore (Cave of Love). The name comes from a truly unique optical phenomenon that draws couples and dreamers from around the world.

Inside the cave, looking up, you can spot a natural opening in the rock. When sunlight enters through this hole and reflects off the water or damp walls, it creates an image that remarkably resembles a heart. This magical, fleeting moment changes with the hour and the angle of the sun, making every visit unique. Local guides say that kissing beneath this "heart of light" brings eternal luck to lovers.

Grotta Ardito takes its name from the family of priest Giuseppe Ardito, historical landowners of the terrain above. This cave holds an iconic position: directly beneath the clifftop terrace offering a breathtaking view of the open sea.

While tourists above marvel at the panorama, below at sea level an almost unreal peace reigns. Very high vertical walls and an entrance resembling a portal to another world define this cave. The water here is often a deep, intense blue, a testament to the depth of the seabed.

For geology enthusiasts and mystery lovers, Grotta dei Fossili (Fossil Cave) is the most fascinating stop. Looking up at the rocky vault, you can clearly see a shell fossil embedded in the stone — evidence that millions of years ago these rocks were submerged seafloors.

Another legend surrounds this cave: a secret tunnel nearly 15 km long is said to connect the Polignano coast directly to the famous Grotte di Castellana inland. While speleologists have not confirmed a walkable passage, the idea of an underground network linking sea and land adds a mysterious charm.

Nature often sculpts shapes resembling human features. Such is Grotta del Naso (Nose Cave), named for the rock formation at its entrance that unmistakably resembles a human nose profile.

Beyond the amusing appearance, this cave is prized for its light effects. The cavity's shape lets sunrays enter at an angle, creating blades of light that cut through the darkness and illuminate the fish swimming beneath the boat. Perfect for snorkelling and playful photos.

We end with the magnificent Grotta Sella. Its name comes from the distinctive rock jutting seaward at the far end, closely resembling a horse saddle — a landmark visible even from afar.

The real magic is inside. Grotta Sella is open to the sky in places, thanks to a large hole in the vault. At noon, a vertical beam of light illuminates the cave's centre like a theatrical spotlight, making the water almost unbelievably clear. One of the most popular spots for a refreshing swim during our tours.