Nagahama Castle was abandoned during the start of the Edo Period (1603 - 1868), the remains transferred to Hikone Castle and Daitsuji Temple, leaving only a stone wall and well behind. Then, in 1983 the castle was reconstructed based on its appearance during the Azuchi-Momoyama period (1573 - 1603), with the interior featuring a history museum. The Nagahama Castle History Museum displays materials relating to feudal lord Hideyoshi Toyotomi and Nagahama, while the observation deck on the fifth floor gives a wonderful view out across the north of the lake.