Oshiro Park, also known as Tsu Castle Ruins, is a historic site in Mie Prefecture that offers a glimpse into Japan's feudal past. Once home to the powerful Toda Clan, this park features remnants of the castle's stone ramparts and a reconstructed turret. Visitors can stroll through the Japanese garden, enjoy cherry blossoms in spring, and admire the autumn leaves in fall. It's a must-see for history buffs and a hidden gem in Tsu City that shouldn't be missed!