Opening Times and Booking

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Opening timetable

Neptune's Grotto is open every day in favorable weather and sea conditions and with the exception of 24 and 25 December

Every full hour begins a guided tour lasting approx. 30 min

In order to ensure a safe visit, we ask you to be punctual.

9 AM - 7 PM ( last entry )

9 AM - 7 PM ( last entry )

9 AM - 7 PM ( last entry )

9 AM - 7 PM ( last entry )



9 AM - 7 PM ( last entry )

9 AM - 7 PM ( last entry )

9 AM - 7 PM ( last entry )


Reservations are required from website Alghero Experience 
We inform you that the reservation does not include the purchase of the entrance ticket to the Neptune's Cave.
Buy Alghero Ticket to visit the city’s monuments and museums, Neptune’s Cave and the Regional Natural Park of Porto Conte.

Buy your ticket online to avoid queues, at the official bookshop of the Alghero Foundation in via Carlo Alberto 84 - Atelier#3. Alghero Turismo Bookshop, from Friday to Sunday 4pm-7pm – Saturday 10am-1pm or at the Cave's ticket office during the Cave’s opening times.


It is necessary to arrive at the square in front of the overland entrance to Neptune's Cave at Capo Caccia no later than 40 minutes before the start of the tour in order to accommodate the time necessary to descend the steps and for check-in.

Should you fail to arrive at the requested time your booking will be cancelled.

If, on the other hand, you wish to access the Cave by sea, please note that booking is not required Here more info 
Passengers on scheduled boats are automatically reserved a place to visit the Grotto. The cost of the ticket for the boat trip does not include admission to the Grotto of Neptune.

If you are a tour operator, a travel agent, part of a group of more than 25 people or a school group, contact us at to book the visit and to find out the advantages and offers available to you!

We would like to remind you that for safety reasons, in the event of adverse weather and sea conditions, the Cave may be closed

In the event of bad weather or particularly windy conditions, we advise you to check that the site is open before your arrival, either by land or sea, by calling the Cave on +39 345 7418361, the tourist information office on +39 079 979054 (key sequence 1-1-1) or by following the updates available on the Cave’s official Facebook and Instagram pages

Whenever feasible, depending on operating times of the ticket office, we will contact you via the email provided when signing up to inform you of any forced closure and invite you to proceed with a new booking.