Did a bit of a Tohoku Tour using the Seishun-18-Kippu and started in Hirosaki. The Castle Park was nice and must be truly gorgeous in hanami season.
The area of "samurai houses" was rubbish and not worth a look at all. (Head to Kakunodate instead!) Hirosaki is famed for its apple-pies and they're EVERYWHERE! The tourist info place produces a leaflet with pictures of about 100 different apple pies and a map so you can find them all around the city. Like a sweet, fruity treasure hunt!