Introduction to Nagoya Castle: Nagoya Castle is the symbol of Nagoya and a must-see for tourists traveling to Aichi Prefecture. It was built in 1612 and is surrounded by a large park, with small teahouses and traditional Japanese gardens. The biggest feature of the castle is the two golden dolphins decorated on the eaves. In spring, more than 2,000 cherry blossoms are in full bloom, and the trees are lush and beautiful.