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Arecibo Observatory

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Address: HC-3 CAJA 53995, Arecibo 00612, Puerto Rico
Phone Number:
+1 787-878-2612
See all hours
Wed - Sun 9:00 am - 4:00 pm
Recommended length of visit: 1-2 hours
Fee: Yes

Explore the wonders of the universe at the world's largest radio telescope...

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.

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TripAdvisor Reviewer Highlights

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Pretty amazing science

The observatory is not exactly what I expected, but it is definitely worth a visit while on the island. There is a small visitor building that has displays about the telescope and... read more

Reviewed 1 week ago
Poughkeepsie, New York
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829 Reviews from our TripAdvisor Community

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Showing 716: English reviews
Doral, Florida
Level Contributor
38 reviews
23 attraction reviews
common_n_attraction_reviews_1bd8 11 helpful votes
Reviewed 1 week ago via mobile

The largest deep space listening post in the world. Listening to deep, mid and close space with collected data since 1963.

Thank Jerry131
Poughkeepsie, New York
Level Contributor
47 reviews
16 attraction reviews
common_n_attraction_reviews_1bd8 25 helpful votes
Reviewed 1 week ago

The observatory is not exactly what I expected, but it is definitely worth a visit while on the island. There is a small visitor building that has displays about the telescope and the types of astronomical sciences. There's a movie about the telescope, it's inception and construction and discoveries. Outside you are actually standing right on the edge of the... More 

1 Thank dvmtraveller
Yorktown, VA
Level Contributor
317 reviews
82 attraction reviews
common_n_attraction_reviews_1bd8 128 helpful votes
Reviewed 1 week ago via mobile

My husband works at NASA so the observatory was on his must see list, but the whole family enjoyed seeing the telescope. The drive up was the typical narrow, winding roads like a roller coaster with 2 way traffic and huge potholes. After parking there is a steep uphill walk, a visitor center with interactive displays, and a film to... More 

2 Thank seethesightsUSA
Tampa, Florida
Level Contributor
12 reviews
9 attraction reviews
common_n_attraction_reviews_1bd8 3 helpful votes
Reviewed 1 week ago via mobile

This is truly a very cool place! My 12-year-old son and I had a great time wandering around the building and gazing out at the radio telescope. Watch the movie and take the short tour to get the full experience. The exhibits are interactive and fun. The drive to get there is almost like being in the middle of nowhere... More 

1 Thank Karen V
Geneva, Switzerland
1 review
common_n_attraction_reviews_1bd8 2 helpful votes
Reviewed 1 week ago

Seeing the observatory in person is quite impressive. We even saw the thing move, very slowly, while we were there. Apparently this thing is in use 24/7-365. There's a small exhibition and a video they show in both Spanish and English every 10-20 minutes or so and a friendly informational guided "tour" with some fun stories. Apparently James Bond is... More 

2 Thank Andreas N
Zionsville, Indiana
Level Contributor
185 reviews
102 attraction reviews
common_n_attraction_reviews_1bd8 38 helpful votes
Reviewed 2 weeks ago

It is a beautiful but winding road to get to this place, but once there, it is unforgettable. The size of the facility is amazing and the views from the top are even better. Anyone who is slightly interested in science should see this. The visitor center is adequate, but you are really just here to see and learn about... More 

Thank Mike46077
Spotsylvania, Virginia
Level Contributor
34 reviews
23 attraction reviews
common_n_attraction_reviews_1bd8 20 helpful votes
Reviewed 2 weeks ago

If you have an interest in "outer space" than this is worth the trip and to see one of the largest radio dishes in the world. NOTE* if you want to shoot pictures you have to have a normal digital camera because you can not have any cell phones on because it causes interference with the observatory. You have to... More 

Thank Kevin K
Level Contributor
9 reviews
3 attraction reviews
common_n_attraction_reviews_1bd8 4 helpful votes
Reviewed 2 weeks ago

It is a little bit of a hike to get to the Observatiory, but the scenery is beautiful! There are a lot of interactive exhibits to learn from. I had a lot of fun

Thank Venus M
Akron, OH
Level Contributor
17 reviews
4 attraction reviews
common_n_attraction_reviews_1bd8 5 helpful votes
Reviewed 3 weeks ago

We are a family of five from Ohio. Girls ages 19, 11 and 8. Both parents big science/space buffs. This has been on our bucket list since seeing Contact. Booked on an amazing day trip tour with Tourism Family in PR. The trip there was a winding, hilly tour of inland PR. Glad we had a tour guide. Not sure... More 

Thank hbeining
Cleveland, Ohio
Level Contributor
26 reviews
11 attraction reviews
common_n_attraction_reviews_1bd8 16 helpful votes
Reviewed 3 weeks ago

Rather than pay for a package tour, we opted to rent a car and drive there ourselves. We felt pretty happy about that, arriving ahead of the other tourists who came in from the various "Day Trip" packages. Google maps on our cellphones got us there without incident. You start off with the visitor center and the staff was enthusiastic... More 

Thank Jason A

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