Bukeyashiki: Samurai Residence in Aizu-Wakamatsu
It was certainly interesting to see the displays that show the way of life of the samurai. Having traveled around a lot of Japan and seeing several castles, museums, and old homes, I'm familiar with the dress, equipment, and room styles which didn't really change much (from my perspective) for hundreds of years. Tatami mats, kimono, armor, and paper screens are all very familiar to me now, so the story behind this residence (the suicide, the way of life in Aizu, etc) is what really interests me here. Unfortunately, I can't find my pamphlets/English information to help me retell those stories to you in detail.
I mentioned the major gift shop. I believe it's the largest single gift shop in Aizu (though Iimoriyama has several shops that combine to take up more space) which means it has more unique items. I also felt the prices here were comparable to, or cheaper than, other shops around town. I bought my souvenir akabeko (red cow) at the castle, which I think was a little cheaper. But as for other Aizu gifts such as omiyage - food souvenirs, locally produced crafts, and your standard trinkets for foreign tourists, this is your best bet... again, on average.
Admission is 850 yen and the residence is open 8:30-17:00 (9:00-16:30 December to March). Get off at the Aizu Bukeyashiki-mae stop, which is right in front.