Otaki Castle

Honda Tadakatsu, one of the four Tokugawa lords, was the first lord of the castle, and went on to develop the castle town.
The current building is a history museum built in 1975 on the ruins of the Honmaru.
The museum is currently closed for renovation, but exhibits are on display in the adjacent training hall.
The site is open to visitors and and is popular during the cherry blossom season in spring.