Chikusenso, a high-end Japanese onsen resort operating since the 1970s, underwent a major renovation from 2010 to 2011. World-renowned Architect Yukio Hashimoto led the project, blending traditional Japanese aesthetics with modern materials, and seamlessly integrating architecture with nature. Mr. Hashimoto aimed to maintain Chikusenso's Japanese ryokan essence, describing it as "less intense and more intimate" than a western hotel. "We created something unique by combining traditional design with modern materials," In an interview Hashimoto explained. He used kimono fabric for sliding partitions and red lacquer in bathtubs, giving traditional elements new relevance. Despite these innovations, Chikusenso retains its ryokan feel. Hashimoto balanced modern touches with traditional craftsmanship, such as a large Japanese-style iron bell in the main living room. He also emphasized nature connection, installing floor-to-ceiling windows to showcase surrounding trees, and creating a central courtyard with a bubbling stream fed by a nearby river. The same river supplies the water to Chikusenso’s public baths. Hashimoto built the female bathing areas around existing trees, which now pierce through a wood deck. “I wanted to guests to feel a sense of wholeness with nature when they were sitting in the hot spring outside,” Hashimoto says. “The trees are growing from within it. It makes for a very comfortable experience.”

Chikusenso is nestled within Zao Quasi-National Park, a renowned mountainous region in the Tohoku area. This park, stretching approximately 40 kilometers, is composed of old and new volcanic formations. Here, you'll find stunning landscapes, including the towering Iwasaki Rock and breathtaking gorges. North Zao showcases ancient volcanic terrains, while Central Zao is home to the iconic volcanic lake, Okama, and magnificent waterfalls. South Zao boasts vast wetlands and the world-famous winter spectacle of snow monsters. Located near the starting point of Zao ECOLINE, a scenic road connecting Miyagi and Yamagata prefectures, Chikusenso is a popular base for exploring the beauty of Zao. Many guests drive here from nearby areas or even Tokyo to enjoy the stunning scenery and go hiking around Okama after breakfast. The hiking trail around Okama is featured in Lonely Planet's "Best Day Walks in Japan." Zao's ski resort is also listed as the one of the best ski destinations in Japan by Lonely Planet.