Andrew T.
Yelp
I think that the Clock Tower doesn't sell itself effectively. Tours are hilariously cheap, 280JPY or something when I was there, and even less if you buy it as a combo with the Sapporo TV Tower ticket. And the building looks small, maybe a bit unimpressive, and I almost dismissed it. But then I decided, I'm here, it costs almost nothing, I'm going in.
Turns out, it's fascinating. The exhibits are pretty well explained in English, so you don't feel totally left out if you don't speak Japanese. They explain so much about the early days of Sapporo and the Agricultural College. What was so interesting to me was the Western heritage that's unexpectedly strong in Sapporo due to one of the original organizers of the college, William Smith Clark, who is still celebrated as something of a local hero in Sapporo even while he's been largely forgotten in the US. It's the unexpected dose of Western culture that made all this seem very cool to me - something you would never expect, but which still manages to have some influence today.
Don't miss Hello Kitty souvenirs with Dr. Clarks' parting words, "Boys, Be Ambitious!" written on them. Just when I think there's nothing Hello Kitty that's new under the sun, I find something like this.