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Details for Benchmark: JS4121

N 38° 34.737 W 121° 29.514 (NAD 83)

Altitude: 0

Coordinates may not be exact. Altitude is UNKNOWN and location is ADJUSTED. (more info)

In SACRAMENTO county, CA View Original Datasheet
Marker Type:
setting not listed - see description

Must Read!

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On our walk trough sacramento we found this building as well.

We saw this today when our caching today

Found while out and about

Sac Ch Blessed Sac Dome

Caching in the area. Pretty hard to miss. Pic attached.

photoChurch Dome

Hard to miss this one.

photoBM JS4121

Found on a Family Trip to San Francisco.

Visiting the area


Can see these two from aways away.

Found this one while staying in Sac for a few days

On our 2nd day in Sacramento, we add a few Benchmarks to our list... Thanks.

photoCathedral dome.

Walked around the block and then to the top of the parking garage next door. Everything appears to be as described.


Saw while visiting the area.

Spotted this while caching.

Gorgeous architecture and well maintained.

Found it!

Found it

Our 1st Benchmark... Thx

Climbed up on a garage roof for this photo. Dome found in good condition.

photoJS4121 Church Dome

Still here. Where else would it go!? Didn't know that a dome could be a benchmark. Discovered this today while looking for the Five Crosses Cache. Unfortunately, I didn't save the picture I took on my phone.

I spotted this benchmark while I was in the area today.


photoJS4121 & JS4134, Sacramento, CA

Out and about in Old Sac today and the surrounding area. This was the most beautiful stop of the day.

This entry was edited by 2DVS4U on Sunday, 09 October 2011 at 09:22:57 UTC.

photoCathedral Benchmark 4121

Beautiful! This was a busy place today. We saw two wedding parties back-to-back!

photo5 Crosses

Out for the day doing benchmarks

photoFrom K st.

Forgot to mark this one as "found" when I found it back in December. The most beautiful benchmark I've ever seen!

photoDome and Spire

EUREKA!!!! Look close. From my office you can see a Grand slam of four benchmarks between two "uprights" .

EUREKA!!!! Look close. From my office you can see a Grand slam of four benchmarks between two "uprights" . SCORE!

Found while seeking geocache.

Spotted this while searching for a nearby cache.

Found this and two other today while looking for a cache at this church.

Found this one because a geocache reminds about. :)

On a lunchtime foray finding benchmarks.

photoDome and Spire

this is the only view i could get with my cell phone.


Admired this site from all angles.

Found while geocaching had the opportunity to see all of the crosses and dome at one time.

photofive crosses and dome
five crosses and dome

Found with Joe of Team Pluto after having lunch with him and jimlips.

photoJS4134 spire + JS4121 dome
not sure which dome, but both the big one and the small one are visible in this shot (as is the spire)

Found this as part of "Sacramento's Second Webcam Cache".

Great view of the benchmark from the cache!

glad I came with my sons today here in SCA a little rain but not bad number 3 today

Found this as part of "Sacramento's Second Webcam Cache".

Found this BM while getting the webcam "Sacramento's Second Webcam Cache"

Found while working on "Sacramento's Second Webcam Cache", GCH5EF


Found this Benchmark while looking for GCZ587 - Five Crosses Cache. Beautiful church.

Could you imaging trying to maintain such a thing?
Found while after a webcam cache.

Found as described

What a beautiful church... too bad it's now overshadowed by the taller buildings!

Found this while caching downtown after a training class.

photoBM JS4121 and JS4134

Out with Mckenzie~Binns. Good day.

After Sacramento's 2nd WebCam Cache.

photoDome, Dome, Dome..Dommme, DOME!!!

Found it!!

Finally logging this benchmark that I pass regularly.
~ecrane b#8

I found this one today while looking for the Five Crosses Cache, it's a bonus making this day even better than I thought.

photoThe Cathedral

Found this as a bonus to cache GCZ587 during our trip to GW6!!

A weekend in the area for GWVI so trying to scoop up a few other caches. This was a bonus find with GCX587.
BAKO1313 & MRS

Wow, did not realize the Dome was a Bench Mark. I see it every time I go to work.

I've seen this many times, I didn't know it was a benchmark. I am used to the brass discs.

Found easily while visiting the area on the 4th and 5th.

photoThe Dome

Spotted this while hunting benchmarks in the area.

photoJS4121, 3/9/08

I work right around the corner at the Sheraton Grand. It was nice to check my work computer and find benchmarks within walking distance. PMP

Spotted while searching out a nearby cache.

TFTB We enjoyed this beautiful weather!! Now it is back to snow, ice and good ole OHIO weather.

I'm surprise that this building has two benchmarks related to it! -40-

Beautiful church!


Cool. Beautiful part of the view from a nearby cache hide.

Beautiful! And conveniently located on my business trip today!

Was downtown today and got this shot of the Dome and the Spire.
Now I realize...correct Dome, but not the correct Spire!

photoSpire and Dome

found the location with a nice view. Jasc the Brat and the Schooltch4daz.

Found the location. Schooltch4daz and the Brat.

Got a lovely view from the 5 crosses cache.

photo5 Crosses

Tour just happened to be starting so I was actually able to see the inside. Even more ornate than the outside. part of WebCam Cache.

found while doing Sacramentos second webcam cache

In town with dadfish, we were close by for a geocache.
Thanks for bring us here, Don


Got a great view of this benchmark while finding Guido O's Five Crosses cache.

Hey. I can log this from my hotel window! Yay!

I've worked in the shadow of this mark for several years now.

Observed both domes, not sure which one it is.


Found it while searching (unsuccessfully) for the Five Crosses Cache.

well, didn't actually SEE it but know where it is :)

Found while caching in downtown Sacramento thanks to Guido O.

Cool--my first benchmark log!

Guido notified me that the Dome was actually a benchmark. Spotted it on 12/4/06. Thanks Guido.

A beautiful spot for a benchmark.

Ran accross this one while unsuccessfully looking for the 5 crosses cache

The cross on top of Dome is one of five visible from Guido's Five Crosses Cache.

Saw this while grabbing Guido's Five Crosses Cache

Spied this benchmark while visiting Guido's Five Crosses Cache.

Found while walking in Scramento

I can also see this one from my building at work.

Found this as part of the webcam cache along with the spire.

Found with bullit on the GBES Rally trip. Bullit was our Designated Taker of Tiny Photos.

Found with Nazgul on the way back from the GBES rally.


1320HR We Found It, Out Caching & Benchmarking w/Scooby's Helper.

Nice day to go caching/and benchmarking I was w/Pathfinder and my mom.

Found this on a super windy day... had to hold the hats down!

TRAKD Was Here! :-)

Found with Hynr while doing 47Dad47's webcam cache.

Constsruction at the site, but the dome is clearly visible.

Jeo was here
Had to leave kind of quick due to a fast approaching lightning and thunder storm

It's certainly not the tallest point in this area anymore. I wonder if it's still useful to surveyors.

Have attended Mass here.

not far from my hotel thanks USGS for the benchmark.

Have attended Mass here

Nice church.

I wuz 4wheeler's designated driver today.

Found it with 4wheeler and TeamAlamo when working on 2nd webcam cache.

Found with TeamAlamo and Wyldwood while working on "Sacramento's Second Webcam Cache"

Part of Sacramento's Second Webcam Cache hunt.

Working on "Sacramento's Second Webcam Cache" on the side while walking between geocaches here in downtown Sacramento on a beautiful day. mr mo of "two bison"

Found this one with NightKnight but didn't have a profile yet. Just catching up.

Another one found doing the Sacramento's Second Web Cam cache. I like these buildings.

Another one!!! I'm on a roll.

It would have to be this dome that is the benchmark. Not much doubt about that.

We were a little unsure which of the two domes was the one in question...the big one or the little one. 47Dad47 and others seem to think it's the big one, but we could make a case for the little one as would be a better choice as a marker because there is a more defined point, and because it's taller and therefore more visible from a distance. But since we saw both domes, we figure it's a find either way. NOTE: Since our camera's battery died before we got here, we have copied 47Dad47's photo from the Spire benchmark page to demonstrate what we mean about the two domes. Hope you don't mind, 47Dad47! Thanks!

photoTwo Domes...Which One?
We're inclined to think perhaps the smaller, but taller, dome is the benchmark, but it may actually be the larger one as others have surmised. Thanks again, 47Dad47, for the picture...hope you don't mind that we "borrowed" it!

I attended this location in the process of doing Sacramento's Second Web Cache. The photo proves that I was there.

photoThe church dome

Benchmark is the dome of the Cathedral-Blessed Sacrament.

photoDome of the Cathedral-Blessed Sacrament

Documented History (by the NGS)

01/01/1931 by CGS (FIRST OBSERVED)
01/01/1970 by NGS (GOOD)

Control Text

  • The horizontal coordinates were established by classical geodetic methods and adjusted by the National Geodetic Survey in March 1994. The horizontal coordinates are valid at the epoch date displayed above. The epoch date for horizontal control is a decimal equivalence of Year/Month/Day.
  • The Laplace correction was computed from DEFLEC99 derived deflections.
  • The geoid height was determined by GEOID99.

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