If you have a chance to go to Kobe, I recommend getting a ticket deal for about 1000 yen that allows you to visit the Kobe Port Tower, the Kobe Maritime Museum, and the Kawasaki Good Times Museum. The Kawasaki one is interesting if you're into motorcycles, trains, and other heavy industrial products.
In the picture below, the red tower is the Kobe Port Tower and the greenish white paraframe building next to it is where both museums are located. They share the same building. The area from where the photo is taken is the Mosaic which is an outdoor mall area at a dock. The area of the city is called Harborland.

This photo is from the top of Kobe Port Tower looking onto the Mosaic.
