top of page


Guided tour by Porto Secret Spots

Visit a seismic station;

See the 6 city bridges;

Discover the real reason for scientific research;

Learn about earthquakes and nuclear tests;

Learn more about the Cold War.

Contactos - Reservas
info IGUP


Rua Rodrigues de Freitas, 418 - Serra do Pilar

4430-211 Vila Nova de Gaia

Coordinates:41.13830156581018, -8.603869467788982

Instit. Geofísico_58_20190613_DJI_0002 (2).jpg
  • TripAdvisor

Visiting Hours

Saturdays at 3:00 pm and 4:30 pm.


Maximum 13 people with a guide.

Minimum age = 12 years old

Estimated duration of 60 minutes

(appear 15 minutes before the scheduled time)

Ticket Office

Regular ticket:€12 

Students and workers at the University of Porto: 10€

Payment by card only.

Phone: +351 933 088 331 

It is mandatory to make a reservation at least 24 hours in advance.


Guided tour by Porto Secret Spots

In Gaia, in the middle of Serra do Pilar, there is a centenary building that goes almost unnoticed in the landscape: it is the Geophysical Institute of the University of Porto.

Created in 1885 behind the Serra do Pilar Monastery, the Institute keeps two secrets from the crowds: 

 - a seismic station built in 1962 by the United States of America, officially for "scientific research", but which put Porto on the map of the cold war between the two superpowers;

 - is the only place on Earth where it is possible to see all 6 bridges that connect Gaia to Porto, from Arrábida to Freixo.

Come learn about earthquakes and nuclear tests and discover the American lie that marked this history.


What is the meeting point for the visit?

  • At the main gate of the IGUP, the guide will be waiting for you.

Where can I leave the car?

  • If you come to the IGUP by car, we have parking spaces inside the IGUP. You can park your car on the main avenue surrounded by trees.

Is the IGUP guided tour worth the effort (and price)?

  • We believe so! The guided tour allows you to discover the whole story, from the lie that led to the construction of space to the explanation of earthquakes and nuclear tests!

Who can take the guided tour of the IGUP?

  • All persons aged at least 12 years.

Is it possible to just book the seats, without making the payment?


  • Yes, you can contact us to make the reservation and payment is made before the visit starts.

Can I bring my cell phone or camera during the visit?

  • Yea! All photos are welcome, so you can bring whatever equipment you want, as well as take pictures at any time during the visit. Filming is not allowed.

What happens if I am unable to attend the visit?

  • If you are unable to attend the visit, you can reschedule or request a refund.




Telefone: +351 933 088 331 

bottom of page