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Photo: Eaglefire, CC BY-SA 4.0 via Wikimedia Commons
A former school of the Aizu Clan built in 1803. Known as a "samurai school", the boys who attended had lessons in academics, martial arts, and culture in order to make them proper moral citizens and soldiers. Some of the byakkotai boys who fought in the Boshin War were students here. It has been converted into a museum where you can learn about daily life at the school. Visitors can participate in a variety of experiences reminiscent of what the boys might have studied, such as archery, zen meditation, and tea ceremony lessons, along with more modern activities, such as painting Akabeko and Okiagari Koboshi. Some activities require reservations, which can be made on their website (Japanese only).
The Nisshinkan (Nisshin-kan), located in Aizuwakamatsu, Fukushima, Japan, was the Aizu clan's official domain school (hankō). Established in 1801 and completed in 1803, It was created to educate the sons of high-ranking Samurai. The school's textbook, Nisshinkan dōjikun written by daimyo lord Matsudaira Katanobu in 1803 was read by the students in class and given to the Aizu Samurai's families which allowed girls to be taught from it as well.
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旧滝沢本陣
A resthouse that was used as a headquarters during the Boshin War. The Byakkotai left here to fight in the Battle of Tonoguchihara.
白虎隊伝承史学館
Over 5000 artifacts are on display from the Byakkotai, Shinsengumi, and Boshin War.
戸ノ口堰洞穴
It looks like a small spring, but is actually part of an ancient irrigation tunnel. It took over 50,000 men over 3 years to dig here from Lake Inawashiro. It is best known today as the tunnel used by the Byakkotai to escape after their defeat from the Battle of Tonoguchihara. Upon emerging from the tunnel, they saw smoke around Tsuruga Castle and believed the entire domain had fallen.
さざえ堂
An architectural wonder, the Sazaedo contains two spiral staircases running opposite one another so that those going up will never cross paths with those going down. It's a temple with 33 statues that represent the temples of the Saigoku 33 Pilgrimage in the Kansai area. Visitors are meant to pray at each to receive special blessings in lieu of visiting each of the real temples.
白虎隊記念館
A private collection of exhibits related to the Boshin War and the Byakkotai.
白虎隊の墓
Graves for each of the 19 boys who committed suicide on October 8, 1868 (the date written reads August 23 which is from the old lunar calendar used at the time. It coincides with October 8 on modern calendars) when they believed their castle had fallen to the enemy. Villagers hid their bodies in a nearby temple so that they would not be defiled by the Western Army and later returned to Iimoriyama in 1989. Each of the boy's names are written on one of the small gravestones. Additionally, there are graves for other Byakkotai soldiers who died in battle.