Maeda Toshiie made Kanazawa the base of his holdings, which expanded to cover all of Kaga Province, Noto Province and Etchū Province as Kaga Domain under the Tokugawa shogunate. He ordered the castle completely reconstructed in 1592 after lessons learned during Japanese invasions of Korea, and invited Takayama Ukon, the "Kirishitan daimyō" known for his expertise in castle design to assist with the construction.