Well water used in Lord Ieyasu's birth, said to offer divine help in longevity and childbirth

Matsudaira Toshogu Shrine worships Tokugawa Ieyasu and the founder of the Matsudaira line, Matsudaira Chikauji. The shrine premises were once the Matsudaira residence and continue to be home to the Ubu no Ido Well, whose water was carried to be used in Tokugawa Ieyasu's first bath after birth. The well water is said to offer divine intervention with long life and childbirth and is also offered to worshippers as holy water.
Right next to the shrine's Worship Hall is the Matsudaira-Go Historical Museum with relics related to the Matsudaira and Tokugawa clans, such as armor, commander and other fans used in military signals, saddles, matchlock guns, and a statue of Ieyasu. The water-filled moat and stone walls still present are said to have been built by the ninth lord of the Matsudaira Tarozaemon family, Matsudaira Naoyoshi after the Battle of Sekigahara—the defining war which helped to shape the Japan we know today.