Araien Main Branch

This artificial lake is located in the south-central part of Saitama Prefecture, straddling the boundary between Tokorozawa City and Iruma City. Completed in 1934 as a water reserve for Tokyo, the official name is "Yamaguchi Reservoir." The lake is surrounded by Saitama Prefectural Sayama Nature Park, where you can enjoy 20,000 cherry blossom trees in spring and vivid leaves in autumn, the symbolic Mt. Fuji reflected on the lake's surface and bird watching. The stunning seasonal scenery of this area was chosen as one of Saitama's 100 Top Nature Spots and 100 Top Dam Lakes.

The main theme of the Iruma City Museum ALIT is tea! This museum is filled with resources for learning extensively about Sayama Tea, the history and culture of tea and Iruma City's nature and history. In the spacious museum garden there is a tea room, a pond and wooded area, a restaurant, and a square with lawns. It is an ideal place to take a rest.

Newly reopened in 2021 with the concept: "A heart-warming world nestled in happiness." Find yourself in a world of wonder with high-quality replicas of retro townscapes, interactions with townspeople and spontaneous live performances, and delicious nostalgic foods. There are also new and exciting immersive light-up attractions for you to enjoy!

This facility utilizes the nature of Sayama Hills as an opportunity to interact with and think about our relationship to nature. There is an exhibition room, observation balcony, seminar hall, outdoor grilling space, and much more. There are also five themed spots on a hill adjacent to the center: Waterbird Paradise, Bug Forest, Wetlands Village, Tree Forest, and Butterfly Forest.

At this memorial museum, materials related to the history of aviation are displayed alongside actual airplanes. Visitors can learn about the principles of flight and aviation history from a variety of angles through flight simulators and helicopter piloting simulators! The many airplanes and helicopters displayed throughout the museum are a must-see. A special place to experience the wide-open skies and the history of flight in Tokorozawa. Aircraft craft workshops for families are also held regularly.