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W.M. Keck Observatory

Closed today: Closed
Open today: Closed
Review Highlights
Out of this world experience

My son and daughter-in-law are both astronomers on Mauna Kea, so they wanted to show us what it's... read more

Reviewed 5 days ago
Warren C
Must Do before going up Mauna Kea mountain!

The Keck Observatory headquarters in Waimea on the Big Island is a hidden gem. It is easily... read more

Reviewed 1 week ago
Kailua-Kona, Hawaii
Read all 37 reviews
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  • Excellent85%
  • Very good5%
  • Average8%
  • Poor2%
  • Terrible0%
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“mauna kea”(8 reviews)
“sea level”(2 reviews)
Closed today
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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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Reviews (37)
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1 - 10 of 36 reviews
Reviewed 5 days ago

My son and daughter-in-law are both astronomers on Mauna Kea, so they wanted to show us what it's like up there. It was a magnificent view, especially at sunset, when you can see the mountain top's own shadow on the top of the clouds below....More

Date of experience: February 2018
Thank Warren C
Reviewed 1 week ago

The Keck Observatory headquarters in Waimea on the Big Island is a hidden gem. It is easily accessed and spending an hour or so will completely orient you to the two Keck Observatories on top of Mauna Kea. There are small models and extremely knowledgeable...More

Date of experience: January 2019
1  Thank RetiredKonaLady
Reviewed November 13, 2018

Short on time, we could not take the time to go up to the observatory which requires an hour of acclimation to the thin air both ways. We opted for a tour of the center itself and our docent was extremely competent and able to...More

Date of experience: November 2018
Thank Gamine1949
Reviewed April 29, 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

Date of experience: April 2018
7  Thank Karl S
Reviewed April 17, 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

Date of experience: April 2018
Thank AMTLondon
Reviewed January 21, 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

Date of experience: January 2018
2  Thank dmnurse2016
Reviewed January 7, 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.

Date of experience: January 2018
Thank Coffee94
Reviewed November 15, 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

Date of experience: November 2017
Thank Annette M
Reviewed July 16, 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

Date of experience: July 2017
Thank conniem322
Reviewed June 24, 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

Date of experience: June 2017
1  Thank ceg51
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Questions & Answers
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May 1, 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
October 8, 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