Bob T.
Yelp
I'm a fan of historical sites, and a fan of preserving them - 4 stars!
Plus it's free!
As a museum, it rates about a 2. Not much to see - the building is nice as are the grounds - it's basically one room where they wrote CA's constitution.
The next paragraph is a paste from Kim S. who wrote a solid review-
Colton Hall was built in the 1840s. Shortly after its construction 48 delegates to California's Constitutional Convention met in the second floor assembly hall in 1849. The City of Monterey restored the building and the meeting room is preserved as it looked during those six weeks in September and October, 1849. Thanks to the delegates deliberations, California entered the Union as the 31st state in 1850.
It was a school at one time, and housed the jail. The entrance to the cells is on the back of the building - good to check out. There's a timeline for the history of CA on the walkway which was interesting.
The room is original but everything in it is a re-creation, and you could get the history info online I'm sure - so it's really just checking out the building and the jail. The re - creation of the does give you a pretty good idea of what it must have been like. I appreciated the maps and the copies of other State's Constitutions they were using as a guideline.
10-20 minutes max. for a visit here.
As Kim S. stated, I agree it's not a place you would go out of your way, or make a special trip to see. It's a good, quick stop if you are into historical sites, and are seeing other things in the area - and it's free, so why not check it out!!