I also like the College Park Aviation Museum and the Goddard Visitor Center.

Not museums but also like:
Brookside Gardens
National Wildlife Visitor Center
Annmarie Sculpture Garden

Anonymous wrote:

Anonymous wrote:The Visionary Art museum in Baltimore, Maryland Science Center

+1000

But . . . only if your kids are old enough and willing to follow "look but don't touch" and otherwise stay calm and behaved in a crowded, stimulating space. It's a crazy cool museum, but not for young kids.

The above comment was re the Visionary Art museum.

The Maryland Science Center is FANTASTIC for all ages. We've been to a lot of science museums in other cities -- the Baltimore version is our favorite by far.

Anonymous wrote:The Visionary Art museum in Baltimore, Maryland Science Center

+1000

But . . . only if your kids are old enough and willing to follow "look but don't touch" and otherwise stay calm and behaved in a crowded, stimulating space. It's a crazy cool museum, but not for young kids.

How old are your kids? I like the science museum at Fair Oaks mall.

Anonymous wrote:The Visionary Art museum in Baltimore, Maryland Science Center

I took my tween and she didn't really like it. I wouldn't take younger kids and expect the visit to last very long. it's a small museum overall and the gift shop and restaurant end up taking a good bit of space.

Anonymous wrote:This is more than an hour away, but I have heard it is really interesting.

http://www.frontiermuseum.org/

this place is great - definitely worth a visit! But it is outside and lots of walking around so something to keep in mind when it's cold.

I want to see the Harriet Tubman museum in Chesapeake, MD.

My kids like Mount Vernon.

The Postal Museum and the Building Museum in DC are both great for kids.
There's a childrens museum in National Harbor that's OK. Along the lines of Port Discovery in Baltimore, but not as big.
College Park Aviation Museum is super fun.
Goddard Space Flight Center also has a museum - it's small, definitely not a whole day event, but you could combine the College Park museum and Goddard.

The Visionary Art museum in Baltimore, Maryland Science Center

College Park Airport Museum..you didn't give an age but this is for younger kids..lower elementary.

This is more than an hour away, but I have heard it is really interesting.

http://www.frontiermuseum.org/

The children's area of the native American museum has some really cool interactive activities for school age kids. Usually abandoned.

The huge new air and space museum near the airport. Really impressive.

In DC, but we really enjoy the postal museum. It is definitely not as talked about as other dc museums, but it is awesome

I don't mean the Baltimore kids' museum. Thanks!