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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
Website
Today
09:00 - 16:00
Closed now
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Hours:
Wed - Sun 09:00 - 16:00
Recommended length of visit: 1-2 hours
Fee: Yes
Description:

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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It's big.

Yes, it really is that big. The hanging equipment weighs 90 tons, held up by cables running to 3 towers which they call towers 4, 8, and 12 (as in a clock). Make sure you get a... read more

4 of 5 bubblesReviewed 4 days ago
harriet_deborah_vane
,
Raleigh, North Carolina
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815 Reviews from our TripAdvisor Community

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Showing 704: English reviews
2 reviews
5 of 5 bubbles Reviewed 4 days ago NEW

Definitely worth the side trip if you find yourself in the mountains. Amazing location and a very impressive structure.

Helpful?
Thank Caton F
United States
Level Contributor
66 reviews
40 attraction reviews
common_n_attraction_reviews_1bd8 70 helpful votes
5 of 5 bubbles Reviewed 4 days ago NEW

So yes, DrVeryEvil, being an astronomer, is certainly biased here, but this is a must-see place while visiting Puerto Rico, and well worth the drive. The giant radio telescopes is truly amazing (~300 meters across), and hard to grasp how big it is even when up close and personal. No, you don't get to walk up there to the secondary,... More 

Helpful?
Thank DrVeryEvil
Raleigh, North Carolina
Level Contributor
52 reviews
24 attraction reviews
common_n_attraction_reviews_1bd8 20 helpful votes
4 of 5 bubbles Reviewed 4 days ago NEW

Yes, it really is that big. The hanging equipment weighs 90 tons, held up by cables running to 3 towers which they call towers 4, 8, and 12 (as in a clock). Make sure you get a look at the catwalk out to the center: one Observatory scientist called walking this a "life-changing experience." The geomorphology of the karst formations... More 

Helpful?
1 Thank harriet_deborah_vane
Florida
Level Contributor
26 reviews
15 attraction reviews
common_n_attraction_reviews_1bd8 3 helpful votes
4 of 5 bubbles Reviewed 1 week ago

Easy drive with lots of signs on which way to go. Go early if summer, very hot and lots of step to get in. Little gift shop. For non locals the snack shop is good. I do recommend to try the "empanadillas' and all other local treats, they are good!

Helpful?
Thank bk11415
Guanica, Puerto Rico
Level Contributor
8 reviews
6 attraction reviews
common_n_attraction_reviews_1bd8 2 helpful votes
5 of 5 bubbles Reviewed 1 week ago

This is the most impressive telescope and unique in it own class, and in the world, view in many movie pictures, lots to learn for children of all ages.

Helpful?
Thank Boriqua_56
Caguas, Puerto Rico
Level Contributor
45 reviews
23 attraction reviews
common_n_attraction_reviews_1bd8 21 helpful votes
5 of 5 bubbles Reviewed 1 week ago via mobile

Waoww, this past sunday March 12, 2017. My wife and i, were boared at Home, so i picked out the phone and search were in Puerto Rico i had not been yet. So Guess what. The Arecibo Observatory poped out, on places to visit. Specialy since it was 11:30 in the morning and it is open on sundays Till 4:00... More 

Helpful?
1 Thank Luis A C
York, Pennsylvania, United States
Level Contributor
83 reviews
35 attraction reviews
common_n_attraction_reviews_1bd8 57 helpful votes
4 of 5 bubbles Reviewed 1 week ago

This was definitely a little out of the way to get too, but since my husband studied astro-physics, it was on the list of to dos. We finally got there and parked only to find out that we had a long walk up to the observatory. I am sure the climb would be a lot for many people and not... More 

Helpful?
Thank Laura K
Kitchener, Canada
Level Contributor
128 reviews
56 attraction reviews
common_n_attraction_reviews_1bd8 53 helpful votes
5 of 5 bubbles Reviewed 2 weeks ago

It's a bit of a drive to get here from San Juan, but a really nice drive. Outstanding to see such a huge telescope and to understand how it works.

Helpful?
Thank wrxcat
Ottawa
Level Contributor
68 reviews
17 attraction reviews
common_n_attraction_reviews_1bd8 37 helpful votes
5 of 5 bubbles Reviewed 2 weeks ago

We wandered along a winding road for quite awhile until coming to the largest radio telescope in the world. The new visitor center is excellent describing the research being done there. The walk up the 500 steps is a bit of a challenge but well worth the effort.

Helpful?
Thank rozor
Level Contributor
17 reviews
5 attraction reviews
common_n_attraction_reviews_1bd8 3 helpful votes
4 of 5 bubbles Reviewed 2 weeks ago via mobile

The Place is beautiful and is full of knowledge especially for people that love science. The guides are really helpful and charismatic especially if you started talking about aliens. I don't give them 5 points because for the price (12$ for persons) the tour is to short, in one hour your are done with everything. Anyway good experience.

Helpful?
Thank Joel J. M

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Rhode Island
over a year ago
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