Lake Shikotsu, which boasts Japan's number one water quality, is a caldera lake belonging to Shikotsu-Toya National Park, and it has an eyebrow shape that is long in the east-west direction, with a major axis of 13km and a minor axis of 5km, and it is a lake with a circumference of approximately 40km, a maximum depth of approximately 360m, and an average water depth of approximately 265m. Domestically, it boasts the second deepest depth following Lake Tazawa in Akita Prefecture, and it is also known as Japan's northernmost non-freezing lake.

On the lakeside, a shopping street where Lake Shikotsu's specialty kokanee salmon dishes can be eaten, and the Lake Shikotsu Visitor Center, which introduces the surrounding nature in an easily approachable and easy-to-understand way, and so on, are lined up.

Also, in the surrounding area, Lake Okotanpe, and Mount Fuppushi, Mount Eniwa, Mount Tarumae, which exceed an elevation of 1,000m, and so on, and beautiful nature are left. Besides this, Shikotsuko Hot Spring, Marukoma Hot Spring, and so on, and camping, canoeing, pleasure boats, boating, and so on, can also be enjoyed. Furthermore, "Lake Shikotsu Lake Water Festival" and "Chitose-Lake Shikotsu Ice Festival", and so on, seasonal events are also held.