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W.M. Keck Observatory

Closed Now: 7:30 AM - 5:00 PM
Open today: 7:30 AM - 5:00 PM
Review Highlights
In spite of many warnings regarding the road..it was an easy drive up....

You drive from sea level to almost 14k ft ...and the day we went, it was raining down low, but on... read more

Reviewed 29 April 2018
Karl S
Kamloops, Canada
Very informative !

This is a great tour and gives a lot of information about the work being done by the Keck... read more

Reviewed 18 April 2018
via mobile
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  • Excellent85%
  • Very good5%
  • Average8%
  • Poor2%
  • Terrible0%
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Hours Today: 7:30 AM - 5:00 PM
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65-1120 Mamalahoa Hwy, opened from 10AM to 2PM, Island of Hawaii, HI 96743-8431
+1 808-885-7887
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1 - 10 of 33 reviews
Reviewed 29 April 2018

You drive from sea level to almost 14k ft ...and the day we went, it was raining down low, but on top we were above the clouds. Incredible views....The Keck telescopes have a small public viewing area...and very much worth a few minutes, as the...More

4  Thank Karl S
Reviewed 18 April 2018 via mobile

This is a great tour and gives a lot of information about the work being done by the Keck Observatories on Mauna Kea. We had been to the summit twice on previous visits to Big Island but had never managed to get to Waimea when...More

Thank AMTLondon
Reviewed 21 January 2018

Free tour! Worth the time and effort to learn about the most important group of telescopes in the world! There is nothing up at the actual telescope to learn about as there is no access there; this is where you learn about it from experts,...More

1  Thank dmnurse2016
Reviewed 7 January 2018

Very informative talk about the observatory. Highly recommend a visit before going to the summit at Mauna Kea. You will have a much better understanding of what you will see at the summit.

Thank Coffee94
Reviewed 16 November 2017 via mobile

If you have gone or are planning to go to Mauna Kea and you are in or passing through Waimea, stop at the visitor center of the W M Keck Observatory. It will enhance your visit to Mauna Kea. This location is the campus for...More

Thank Annette M
Reviewed 17 July 2017 via mobile

The guide, David, shared all that is happening at the Twin keck telescopes on Mauna Loa. He explained some of the current research that is possible with these telescopes.Showed us how the hexagonal mirror construction worked that was developed by Jerry Nelson, astronomer. We were...More

Thank conniem322
Reviewed 24 June 2017 via mobile

We stopped by shortly after it opened at 10 am and joined another couple with the docent. The tour lasted about an hour but the time flew by and we learned so much. This is a tour everyone would love to learn what amazing discoveries...More

1  Thank ceg51
Reviewed 22 April 2017

I was impressed with the enthusiastic docents explaining the Keck Observatory, and all the heavens. But when it comes to displays, charts, photos and interactive exhibits, not so much. It was still worthwhile to visit, as I have no plan to drive up the mountain.

Thank Miriahm D
Reviewed 17 February 2017

Open from 10a to 2p Mon thru Fri. Visitors are welcome to the lobby with many displays. The very knowledgeable receptionist gave us a very informative tour of the pictures and displays. Of course you cannot wander around the private offices of the astronomers which...More

1  Thank Bill H
Reviewed 3 February 2017

We had some extra time so we stopped by to look. As other reviewers state, this is a very small and modest exhibit showing photos, models, floor plans, etc of the real telescopes on top of Mauna Kea. It's definitely for the science geeks in...More

1  Thank Mark V
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Questions & Answers
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Marina D
1 May 2018|
Response from AMTLondon | Reviewed this property |
We went to the Observatory office in Waimea. I don’t believe they ate open to visitors at night as this is when the work is done. The road to the summit is tricky and only accessible by 4wd and not rental cars. We have been... More
9 October 2015|
Response from lcomeaux | Reviewed this property |
You really do not see much in the Visitors Center. It is just a room with a part of a telescope and pictures of the telescopes on Manua Kea. It is where all the information from Mauna Key is sent and studied. You cannot... More