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Arecibo Observatory

Hc-3 Caja 53995, Arecibo 00612, Puerto Rico
+1 787-878-2612
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USD 165.00*
and up
San Juan Day Trip to Rio Camuy Caves and Arecibo Observatory
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USD 119.00*
and up
Rio Camuy Cave Park and Arecibo Observatory from San Juan
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USD 94.56*
and up
North Coast of Puerto Rico from San Juan: Camuy River Cave Park, Arecibo...
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Explore the wonders of the universe at the world's largest radio telescope located in Arecibo, Puerto Rico. Here, scientists from throughout the world use the 305 meter dish to gather radio signals from regions of star formation, planets, distant galaxies and the atmosphere. Visit the Angel Ramos Foundation Science and Visitor Center which includes interactive exhibits. Enjoy the amazing view from the observation deck and don't forget the auditorium and souvenir shop.
  • Excellent50%
  • Very good35%
  • Average11%
  • Poor2%
  • Terrible2%
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Closed Now
All hours
Hours Today: 09:00 - 16:00
Suggested Duration: 1-2 hours
Hc-3 Caja 53995, Arecibo 00612, Puerto Rico
+1 787-878-2612
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Reviews (874)
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1 - 10 of 756 reviews

Reviewed 1 week ago via mobile

Great experience! It was very interesting to see just how much science is done at the Arecibo Observatory. It was also great to see what they have a research program for high school students (the Arecibo Observatory Space Academy). The only negative thing I can...More

Thank hrodriguez14
Reviewed 1 week ago via mobile

This was surprisingly a highlight of our trip. We loved it! Really fascinating, the scale is amazing and they do some great talks. Combine with a morning at the caves and you'll have a day to remember

Thank hayley w
Reviewed 1 week ago via mobile

This makes a complete road trip in Arecibo. After visiting all the nice places to visit you can complete your day with this place. Very interesting history....

Thank Iliana M
Reviewed 1 week ago via mobile

One of the biggest radio telescopes on the world. Second to the recently open China located one. So is the biggest in the Americas.

Thank Alexander R
Reviewed 1 week ago

I can't deny that it was cool to see this in person, but it's pretty expensive. I'm going to assume the admission fee goes to a good cause, so I can feel OK about it overall! They have a lot of modern interactive things in...More

Thank Karen1__R
Reviewed 2 weeks ago

This was not a must do for me but it was something my hubby wanted to do so we checked that box. It was very educational and neat to see. They have a small museum and a film you can watch. He loved seeing the...More

Thank biandi
Reviewed 2 weeks ago via mobile

People need to visit this place just to learn how important it is. First the engineering is impressive! One of the must amazing Structural achievement I've seen. As an engineer myself, is so amazing how they completed such construction in the 50s. Is good for...More

Thank Sandra L
Reviewed 2 weeks ago via mobile

It appears to be not taken care of too well. The dish has brush growing through it and blackened panels-would be nice if they cleaned it up. They showed a video all in Spanish with no English subtitles. The information area is a bit outdated...More

Thank Prprncss
AreciboObservatory, Communications Officer at Arecibo Observatory, responded to this reviewResponded 2 days ago

Thank you for taking your time to write a review, we are very sorry that your experience wasn’t what you expected. We are very sorry that you have to walk up the hill, while we have transportation for handicapped people. In the Arecibo Observatory we...More

Reviewed 2 weeks ago

First off, this is NOT a full day event. Secondly, if you are going to drive out from San Juan and want to experience the Observatory, you want to make sure you have other stops in the area to ensure you're not wasting your entire...More

Thank Gary O
Reviewed 2 weeks ago

Very educational, guides speak English and describe the building of the Observatory.Exciting drive if you take the back country roads thru the "Karts Region" from "Ventana Cave" as must if you are in the Arecibo, Puerto Rico area. My son-in-law really enjoyed the drive, sometimes...More

Thank borinkenjv
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Questions & Answers
Marilyn C
24 June 2017|
Answer Show all 10 answers
Response from Jerry131 | Reviewed this property |
yes, speak with entrance guard. they allowed us to drive up to the top, where my wife's mother could access by walker. A wheelchair will also work.
20 June 2017|
Answer Show all 8 answers
Response from kenny h | Reviewed this property |
I don't know of any way to get there without a vehicle. It is 50 to 60 miles from San Juan and I am unaware of any public transportation that goes there. There are tour groups that go out there but it would cost about the... More
Connie M
7 June 2017|
Answer Show all 9 answers
Response from Luis A C | Reviewed this property |
Hy According To the WAZE GPS which i highly recommend in the island is aprox 61-69 miles from San Juan, it will take you right to it, it is 100% acurate in the island, hope it can help. Luis Castr