Baltimore Museums, overall rating: 7/10

American Visionary Arts Museum (AVAM): Interesting but smallish.  Steep entrance fee IMO (first weekend of the month, having a BofA card is helpful).  Black Icarus is quite nice.  Many mechanical devices in the sculpture building were broken (probably from all the use), but those that did work were fascinating.  A crafts fair had popped up there. Right next to a good view of Inner Harbor from Federal Hill.  Rating: 6/10

Walters: Some nice paintings and fine (well proportioned) greek sculptures.  Bonus: it's free.  Rating: 8/10

Baltimore Museum of Art: More nice paintings than Walters including Impressionists. Matisse's Blue Nude was out on loan, but this place is also free.  Rating: 8/10

Fort McHenry: A museum/historical site about war of 1812 and origins of the Key's Star-Spangled Banner anthem. I'm sorry to say, I didn't get the fever. Despite being on the water, the site isn't picturesque. Getting there and back was easy enough by bus. But I didn't find seeing inside the ramparts worth the time and $7 NPS entrance fee.  Rating: 5/10

Baltimore has a free purple line 'Charm' bus service which goes up and down Charles Street from Inner Harbor all the way up to Penn Station (as well as lines in other directions), and the visitor center at Inner Harbor is spacious and welcoming.