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Arecibo Observatory - Top attraction on the north coast of Puerto Rico

Arecibo Observatory is a world class attraction, included in our “Top Attractions of Puerto Rico List”.  It is the largest radio telescope in the world, an intriguing and educational place for the whole family.  The Arecibo Observatory is nestled on the mountains of Arecibo, your adventure begins on the road as you drive through the green lush karst region.

You may have seen the Arecibo Observatory on the Hollywood hits, Contact and Golden Eye.  Photos can’t capture the magnitude of this man made wonder, you have to be here to appreciate the size of it.

The Arecibo Observatory, the world’s largest radio telescope,  was dedicated in 1963.  It’s design and implementation led to advances in the electrical engineering areas of antenna design, signal processing, and electronic instrumentation, and in the mechanical engineering areas of antenna suspension and drive systems. The drive system positions all active parts of the antenna with millimeter precision, regardless of temperature changes, enabling the telescope to maintain an accurate focus. Its subsequent operation led to advances in the scientific fields of radio astronomy, planetary studies, and space and atmospheric sciences.

Clips of Movies filmed at Arecibo Observatory

Visitor Center

Observation Deck - Arecibo Observatory, Puerto Rico

Educational Center - Arecibo Observatory, Puerto Rico

Here, through a variety of interactive exhibits, audiovisual displays, and informative panels, visitors are introduced to basic astronomy, atmospheric science, and to the operation of the radio telescope and its related research areas.


  • (August 1 to December 14 ) and (January 16 to May 31)
  • Wednesday – Sunday – Holidays … 9:00 am – 4:00 pm
  • Mondays and Tuesdays Closed

Summer Season
(June 1 – July 31)
Monday – Sunday
9:00 am – 4:00 pm

Winter Season
(December. 15 – January. 15)
Monday – Sunday
9:00 am – 4:00 pm

Closed on the following 8 Holidays: Good Friday, Easter, Mother’s Day, Father’s Day, Thanksgiving, Christmas, New Year and Three Kings Day.

Admission: Adults $10.00, Children and Senior $6.00

Schools and Special Groups Call for Appointment

Contact Information:

The drive here is scenic and very green, after visiting the Observatory, head over to the Parque Caverna del Rio Camuy.

Map – Arecibo Observatory

Arecibo Observatory is about 1.5 hours from San Juan, with traffic plan for a 2 hour drive.

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Arecibo Observatory - Arecibo, Puerto Rico

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Arecibo Observatory - Arecibo, Puerto Rico 18.346135, -66.752672  More about Arecibo Observatory, Arecibo, Puerto RicoLocated on Route 625 (Directions)

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