Arecibo Observatory

Arecibo, Puerto Rico

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The Arecibo Observatory is a radio telescope in the municipality of Arecibo, Puerto Rico. 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 FloridaIf you’re curious about the astronomy and atmosphere they offered a self-guided tour in the 3,500 square feet of exhibits, with the help of their attentive tour guides. They provide thorough information about the history of the observatory, its many contributions to scientific discoveries and observe the second largest radio telescope in the world.

Address:  Route 625 Bo. Esperanza, Arecibo, PR 00612
Phone787-878-2612 Ext. 346 or 312


  • Adults $12.00
  • Children (5-12 years)
  • Seniors $8.00
  • Schools and Special Groups Call for Appointment.


  • Regular calendar:
    Wednesday – Sunday and Holidays: 10:00am – 3:00pm
    Mondays and Tuesdays: Closed
  • Summer Season (June 1 – July 31)
    Monday – Sunday 9:00 am – 4:00pm
  • Winter Season (December 15- January 15)
    Monday – Sunday 9:00am – 4:00pm
  • 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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