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

Hurricane Maria Update: Science and Visitor Center is open again 🙂 after temporarily being closed.

Arecibo Observatory is a world class attraction, included in our “Top Attractions of Puerto Rico List“.  The Arecibo Observatory is 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.  It was the largest radio telescope in the world until 2016, when China completed a radio telescope currently holding the largest in the world.

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

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.

Hours – Arecibo Observatory

  • Wednesday – Sunday & Holidays  – 10:00 am – 3:00 pm
  • Mondays and Tuesdays Closed


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

Contact Information:

  • 787-878-2612 Ext. 346  /  786-462-6508
  • Address: Arecibo Observatory – Route 625, Bo. Esperanza, Arecibo, PR 00612
  • Official Site

Tours:  Convenient, guided tours are also available, departing from San Juan.  This way you wouldn’t have to drive and navigate yourself.

Arecibo Observatory News

Map – Arecibo Observatory

Arecibo Observatory is about 1.5 hours from San Juan, with traffic plan for a 2 hour drive.  The drive here is scenic and very green, after visiting the Observatory, head over to Camuy River Cave Park /  Parque Caverna del Rio Camuy.

Map Use Instructions

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

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