Hokkaido is safe
Otaru is located 43 km away from Sapporo, and takes about 1 hour by an express way bus or train.
And this Otaru Canal supported the city's prosperity. Why? Because the City prospered by herrings, the canal was set to carry them.
The Canal was much wider and longer than today, so you can watch the remains there, and also Sakaimachi Street prospered by it.
You can ride Otaru Canal Cruise in 1500 yen, and it takes 40 minutes. The Cruise has an English guidance device, so you can understand the canal's outline.