The Issa Soju Memorial Hall in Nagareyama commemorates Issa Kobayashi, a renowned Japanese haiku poet in the 18th and 19th centuries and Soju Akimoto, a brewer of mirin. Issa Kobayashi visited Nagareyama often to see Sanzaemon Akimoto whose pen name was Soju. The home of Akimoto family showcases the Sojutei outer garden, Issa-an dry garden. Sojutei was originally built as the library and study of the Akimotos in the style of a tea-ceremony house. It has been restored, and consists of Okunoma, Nakanoma and Ochanoma with verandas facing east, west and south overlooking the dry garden. Issa-an consists of an eight tatami-mat room and is used for tea ceremonies and gathering of haiku poets. The Issa-Soju Memorial Hall opened in 1995 to commemorate
the friendship and correspondence between Soju Akimoto and Issa Kobayashi.