Hi... Wondering what the best, most extensive science museum is in the US. Thanks.

Hard to come up with a "best" unless one has visited them all, but....

I have fond memories of Chicago's Field Museum from when I was a kid.

Seattle's Pacific Science Center is neat, but it doesn't hold a candle to Portland's Oregon Museum of History and Industry.

Good museums change their emphasis/focus from time to time, so it is hard to have the same experience twice.

Small correction for Bob (not trying to be a pest, I promise!), it is OMSI, Oregon Museum of Science and Industry. Which he is right...it really is fantastic!!! Plus there is a really cool submarine there you can tour.

There's one in Jersey City, NJ.
The Liberty Science Museum.

Heard that it's supposed to be good. We've been wanting to make a trek and see what it's all about, but it's closed and won't re-open until July 2007.

Here.

http://www.lsc.org/

The Field Museum is great, but it's a natural history museum. The best science museum, I think, is the Chicago Science Museum -- it's worth a full day. The Franklin Museum in Philly is another one. OMSI is ok, but it wouldn't top my list of things to do in Portland.

Museum of Science and Industry in Chicago

www.msichicago.org