For the public

Public Outreach

Guided tours for individuals, families and groups are of two types: standard guided tours and observational evening tours.
Those who are interested in doing both activities on the same day can purchase a Full Day ticket valid only during July-August-September.


The standard ticket gives access to the standard guided tour. There are two standard tickets: standard ticket October-June (denoted Oct-Jun, valid from October to June) and standard ticket July-Sept (denoted Jul-Sept, valid from July to September).

During October-June, the guided tour for the public takes place on Saturday afternoons from 3:30 to 6:00 pm. Single visit of about 2 hours and 15 minutes.

During July-September, the standard guided tour takes place in the afternoon, from Tuesday to Sunday. Activities start at 5 p.m. and end at about 7:15 p.m. Observations of the sky start at 9:30 p.m. and end around 11:45 p.m.

The pedestrian gate opens half an hour before the start of the visit.


The ticket gives access to the guided sky observations tour that takes place outdoors in the Space and Time Park and in the Observation Terrace.

During July-September, sky observations starts at 9:30 p.m. You can explore your universe with the naked eye, with small telescopes and the Galhassin Robotic Telescope, the wide-field telescope for distant objects.

In case of adverse weather conditions, sky observations will be replaced by videos and images from our archive.

Limited seats. People are asked to reserve their visit well in advance. No visitors will be allowed outside the allowed number.


Those who are interested in doing both the standard guided tour and sky observations can purchase a single ticket called a Full Day ticket valid during July-August-September.

To find out how and when to plan your visit, go to the Ticket Reservations section and select the ticket based on the period: October-June or July-September.
By selecting a standard ticket, or a full day ticket, or sky observations, you can find out the available dates for each visit.

The Planetarium activity is part of the standard tour.

Costs for the Public – Standard Ticket


15,00 €

Kids (5 – 10 years)

5,00 €

Boys (11 – 14 years)

10,00 €

Full Day ticket


25,00 €

Kids (5-10 years)

10,00 €

Boys (11-14 years)

20,00 €

Visiting Hours

For the Public


15:30 – 19:00

Weekly closing:



Standard / Full-day

Standard Ticket

Standard ticket activities include an explanation of the Space and Time Park exhibits and/or a visit to the Museum (based on scheduling) and a screening in the Planetarium. Duration: about 2 hours and 15 minutes.

Entrance at at 4.30 pm. The guided tour starts at 5 pm. Duration: about 2 hours and 15 minutes.


17:00 – 19:15 (from 2024.07.01 to 2024.09.30)

Full Day Ticket

Full-day ticket activities include standard activities and sky observations. The standard activities start at 5 pm. The observations start at 9.30 pm.
Duration: about 4 hours and 30 minutes.

Standard activity (standard ticket): Entrance at 4.30 p.m. The guided tour starts at 5 pm and lasts about 2 hours and 15 minutes.

Sky observations: Entrance at 9 pm. Activity starts at 9:30 pm. Duration about 2 hours and 15 minutes.


17:00 – 19.15 (from 2024.07.01 to 2024.09.30)

21.30 – 23.45 (from 2024.07.01 to 2024.09.30)

Weekly closing:



Schedules may be subject to slight variations depending on the period when the visit takes place. Any changes will be communicated as soon as possible.
Full day activities or annual events (also with free entrance) are reported in the EVENTS section.

Applying for discounts. For groups of more than 30 adults, a 1 euro discount per person can be applied. The discount code must be requested to the GAL Hassin staff before making the online payment. To request the discount code, please contact:

ANNUAL CLOSING DAYS: 1st January, Easter, Easter Monday, 1st May, 2nd June, 15th August, 25th December, 26th December, 31st December.

WEEKLY CLOSING DAY: Sunday (from September to June) / Monday (July, August and September)


  • Phone +39 0921 662 890

  • Mobile + 39 329 845 2944

  • Administrator: Salvatore Norato

    Guided tour, Astrophysicist Luciana Ziino

  • Email

  • Establishment corner (at GAL Hassin)
    independently managed
    For inforrmation contact: Federica Grisanti, mob. +39 327 441 084.

Methods of payment

Online payment by credit card/PayPal with immediate confirmation of booking and electronic ticket to be presented at the reception of GAL Hassin on the day of the visit.

For groups it is also possible to pay by bank transfer.


Fondazione GAL Hassin – Centro Internazionale per le Scienze Astronomiche
Via della Fontana Mitri, 3   90010 Isnello (PA)
Phone +39 0921 662 890
mobile +39 329 845 2944

– from Monday to Saturday (June only): 9:00 a.m. to 12:30 p.m. / 3:00 p.m. to 5:30 p.m.

Weekly closing day: Sunday

– from Tuesday to Sunday (July, August and September): 3.30 p.m. – 7.00 p.m.
Weekly closing day: Monday

Administrator: Salvatore Norato
Guided tours: Astrophysicist Luciana Ziino

If we are not available, please leave your message +39 0921 662 890) or a WhatsApp message +39 329 845 2944.

You can also contact us via email to /,  including this information: name of the school, name of a contact person, number of students participating, age of students, date of visit, any particular requests.

We ask for your understanding as we require your punctuality.

Cars are NOT allowed to enter the parking area. Parking is available outside the facility. You enter through the pedestrian entrance (smaller gate).

For evening observations, we suggest you wear appropriate clothing (sweater/jacket) that will allow you to stay outdoors throughout the activity.



Ristoro (GAL Hassin)
GAL Hassin – Centro Internazionale per le Scienze Astronomiche
Via della Fontana Mitri, 1 90010 Isnello (PA)
Mobile: +39 327 441 0845
Federica Grisanti

Ristorante La Brace – Isnello
Address: Via Monsignor Oscar Romero, 16, 90010 Isnello PA
Telephone: +39 0921 66 2 810

Ristorante Pizzeria Smeraldo
Address: Contrada Farchio, 90010 Isnello PA
Telephone: +39 0921 61 61 10