We noticed that you're using an unsupported browser. The TripAdvisor website may not display properly.We support the following browsers:
Windows: Internet Explorer, Mozilla Firefox, Google Chrome. Mac: Safari.
Review Highlights
Shoot for the Moon

Volunteers will guide you around the property, give you a tour of the observatory, and show you... read more

Reviewed April 30, 2018
Islip, New York
Wow! Just Wow!

We’ve been vacationing in Riverhead a few times a year for many years. We simply missed this place... read more

Reviewed January 14, 2018
Long Beach, New York
via mobile
Read all 7 reviews
All photos (2)
Full view
Traveller Overview
  • Excellent86%
  • Very good14%
  • Average0%
  • Poor0%
  • Terrible0%
30 Apr 2018
“Shoot for the Moon”
14 Jan 2018
“Wow! Just Wow!”
Suggested duration: 1-2 hours
Local Weather
Powered by Weather Underground
1115 Main Bayview Rd, Southold, NY 11971-3441
+1 631-765-2626
Improve This Listing
Reviews (7)
Filter reviews
7 results
Traveller rating
Traveller type
Time of year
See what travellers are saying:
Updating list...
Reviewed August 17, 2018

We went for the Saturday night Perseids lecture. It was great. We learned about the ties to greek methodology to the stars. Unfortunately due to weather, we could not see the meteor shower there that night. However, they provided us with a wealth of information...More

Date of experience: August 2018
Thank Karen E
Reviewed April 30, 2018

Volunteers will guide you around the property, give you a tour of the observatory, and show you "out of this world" objects through their high powered telescopes.

Date of experience: April 2018
Thank maria20160
Reviewed January 14, 2018 via mobile

We’ve been vacationing in Riverhead a few times a year for many years. We simply missed this place until now! It’s amazing! There are three telescopes and the most knowledgeable and helpful volunteers working there. It was totally worth going out in the freezing cold...More

Date of experience: January 2018
1  Thank MickM734
Reviewed August 8, 2017

We bring our visiting friends here regularly on clear Saturday nights. This place is so special and authentically real! We have friends from NYC that used to comment on our "sad" lack of streetlights in front of our house? After one late night visit they...More

Date of experience: April 2017
Thank Dean R
Reviewed June 26, 2017

Checked it out for the first time (even after living in Southold for 8 years as a kid!) last Saturday for an event that coupled live music with the usual Saturday public viewing opportunity and a new moon. We saw Jupiter through the huge telescope...More

Date of experience: June 2017
Thank honestreport2016
Reviewed October 23, 2016

Our first attempt - wait was going to be too long. Not as busy the next time we tried, and the skies were magnificent to see, and the guide was extremely knowledgable and helpful on what was visible. This is a special place to visit.

Date of experience: June 2016
Thank Barb B
Reviewed March 2, 2016

If you are into astronomy, not astrology, then you will enjoy the Custer Institute. It's an observatory on the north shore of Long Island, NY with dark skies. It houses a new huge telescope and on weekends you can view the heavens through this monster...More

Date of experience: March 2016
Thank Michael L
View more reviews
Nearby HotelsSee all 3 nearby hotels
The North Fork Table & Inn
237 reviews
2.32 km away
Heron Suites
122 reviews
3.73 km away
Southold Beach Motel
51 reviews
4.39 km away
The Pridwin Hotel
254 reviews
5.36 km away
Nearby RestaurantsSee all 39 nearby restaurants
Wednesday's Table
44 reviews
1.38 km away
The North Fork Shack
37 reviews
1.54 km away
Main Street Grill
40 reviews
1.58 km away
Original Michelangelo Pizzeria & Restaurant
73 reviews
1.38 km away
Nearby AttractionsSee all 23 nearby attractions
Sparkling Pointe
198 reviews
1.34 km away
Mattebella Vineyards
38 reviews
.94 km away
Osprey's Dominion Vineyards
104 reviews
1.59 km away
Croteaux Vineyards
99 reviews
.82 km away
Questions & Answers
Get quick answers from Custer Institute & Observatory staff and past visitors.
Note: your question will be posted publicly on the Questions & Answers page.
Posting guidelines