Mt. Tengu (Tenguyama) is a mountain located in Otaru City, Hokkaido. From the mountain's top, you can see both the city and the sea of Japan, prefferably while enjoying the beautiful night views that the mountain is known to offer. Since the stars seen from the mountaintop are said to be like jewels, the mountain's peak is called one of the “Three Greatest Night Views in Hokkaido.” Also, as a ski area where the harbor can be seen in the winter, it is also a popular destination with many skiers. There is also a menagerie of playground equipment like slides, so both adults and children can enjoy it the area.