Sperlonga: Blue Grotto Boat Tour & Swim Break

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Free cancellationTravelers' pick

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Duration1h 30m

GroupUp to 100

LanguagesEN · IT

Mobile ticketAccepted

Sail Past Roman Ruins & Swim Inside a Limestone Cave Off Italy's Tyrrhenian Coast

You board at Sperlonga harbour and sail through the Riviera di Ulisse Regional Park, stopping at Grotta di Tiberio with its Roman villa remains, then moving past medieval towers and limestone caves. You swim for 30 minutes in the Blue Grotto with a fresh water shower and ladder included, then return to port with photos of Torre Truglia. Book morning departures to avoid afternoon wind cancellations.

1h 30m

Step-by-step itinerary

Mini cruise and swim at Blue Grotto

Depart from Sperlonga harbour
View Grotta di Tiberio and Villa remains
Hear history of Roman Empire site
Sail along Riviera di Ulisse coast
Admire medieval towers and limestone caves
Arrive at Blue Grotto for swim break
Swim or snorkel near cave and cliff
Relax on board or in water
Return sailing west past Torre Truglia
Take photos of Torre Truglia and historic center
Return to Sperlonga harbour and disembark

The Experience

So yeah, you're basically floating past 2,000 years of history before you even get to the water part. The boat leaves Sperlonga harbour and heads straight toward Grotta di Tiberio — the Emperor Tiberio actually decorated it with marble sculptures of Ulysses, and you see the villa remains from the water while the skipper fills you in on what it meant to Rome back then. It's not a museum lecture; it's more like someone who knows the coast telling you what's still standing and why it matters to people who live here now.

Then you're moving slowly along the old Via Flacca — that's the ancient Roman road, built 187 BC — and you're spotting medieval towers from the 1500s dotted along the cliffs. The boat has a sun canopy that actually covers everyone sitting down, which matters because you're out there for a few hours, and there's a fresh water shower on board so you can rinse the salt off before heading back. The whole thing is designed so you're not scrambling or uncomfortable between stops.

The Blue Grotto is where the swim break happens. You get about 30 minutes in the water, and the cave has stalagmites and a cliff face that's worth seeing if you're confident enough to swim toward it. The water's cold because spring water flows directly from the cliff — that's what makes it so clear and why people say it's refreshing. You don't have to go in; you can stay on the boat, but the skipper will probably gently suggest you'd regret it. There's a comfortable ladder for getting in and out, and pool noodles are provided if you want them.

On the way back, you pass Torre Truglia — it's basically the symbol of Sperlonga — and the historic center rises up behind it. That's the photo moment. The whole tour runs in the morning by preference; the sea's calmer then, and afternoon mistral winds can kick up fast enough to cancel things last-minute, which nobody wants. The boat returns to the same port where you started, right next to the Truglia Tower, and you're done.

What’s included

Your tour includes skipper commentary about the coast and Roman history, a sun canopy covering all seating, a fresh water shower, a comfortable ladder for water entry and exit, pool noodles for the swim, and a 30-minute swim break in the Blue Grotto with access to the Riviera di Ulisse Regional Park. Departure and return are at Sperlonga Port.

Good to know

Easy physical levelStroller friendlyPets welcomePublic transport nearbyInfants must sit on laps

Operated by Sperlonga Escursioni - Boat tours & rent

Is this one for you?Book this if you want to see Roman ruins and medieval towers without arranging your own boat, and you're comfortable swimming in cold spring water — the morning timing and skipper's knowledge of the coast are what turn a boat ride into a history lesson you actually remember.