Some of Japan’s best onsens are on the southern island of Shikoku.

The only thing better than a day at a hot spring?

Spending the night, of course.

View from a hot spring at Hotel Kazurabashi, Miyoshi, Tokushima

Credit:Courtesy of Hotel Kazurabashi

Dogo-Kan, Matsuyama, Ehime

Thisonsenis one of the oldest and most well-known in the region.

However, the property boasts a large outdoor bath reserved for guests of the 90-room resort.

The stunning panoramic views of the natural landscape below will inspire you.

Oboke Gorge of Yoshino River, Tokushima, Japan

The Oboke Gorge and the Yoshino River near the entrance to the Iya Valley in Tokushima, Japan.Masahiro Noguchi/Getty Images

Sanuki-Fuji and Kotohira town and natural hot springs that flow into the public and private outdoor baths.

The Open-air bath Keikoku no Yu at Wanoyado Hotel Iyaonsen, Miyoshi, Tokushima

Takehito Miyatake/Courtesy of Wanoyado Hotel Iyaonsen

A river running through the mountains in the Iya Valley, Shikoku, Japan in the rain

A river running through the mountains in the Iya Valley, Shikoku, Japan.Ippei Naoi/Getty Images

View from a hot spring at Hotel Kazurabashi, Miyoshi, Tokushima

Courtesy of Hotel Kazurabashi

Scenic view of river amidst mountains against sky in Shikoku,Japan

The Shimanto River flowing through mountains in the western Kochi Prefecturein of Shikoku, Japan.Anubhav C/Getty Images