Arecibo Observatory

Arecibo, Puerto Rico

The Arecibo Observatory is a radio telescope in the municipality of Arecibo. Built between 1960 and 1963, is an astronomy and ionosphere research center. This observatory is a facility of the National Science Foundation operated under cooperative agreement by the University of Central FloridaIs a great place to visit and explore if you are interested in astronomy and the atmosphere. Its’ main purpose is to explore, study and investigate our atmosphere and space to detect signals from the universe.

It has a fantastic Science and Visitor Center with 3,500 square feet of exhibits. Different tours are available. From the self-guided tour to the VIP tour. This last one includes a ride in an official vehicle to the edge of the1,000 feet (305 meter) reflector where you will receive a comprehensive talk about the amazing engineering structure, which will be very close to you, among behind the scenes views.

In addition, knowledgeable tour guides will provide information regarding its history, many contributions to scientific discoveries and observe the second largest radio telescope in the world! For your comfort you will find a Food Stand and a Galaxy Shop.

Address:  Route 625 Bo. Esperanza, Arecibo, PR 00612
Google Map

General Admission:

  • Adults $12.00 + Tax
  • Children (5-12 years) and Seniors (60+) $8.00 + Tax
  • Schools and Special Groups must call for appointment.


  • Regular calendar: (Aug 1 to Dec 14 and Jan 16 to May 31)
    Wednesday – Sunday and Holidays: 10:00am – 3:00pm
    Mondays and Tuesdays: Closed
  • Summer Season (June 1 – July 31)
    Monday – Sunday 10:00 am – 3:00pm
  • Winter Season (December 15- January 15)
    Monday – Sunday 10:00am –3:00pm
  • Closed for the following Holidays: Good Friday, Easter, Mother’s Day, Father’s Day, Thanksgiving, Christmas, New Year and Three Kings Day.

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