There is a statue of Sanada Yukimura on the grounds in recognition of the belief that the area is the location of the Sanada Maru, a fortification defended by the Toyotomi clan during the 1614 Winter Campaign of the Siege of Osaka. Within the grounds of the shrine is the opening of a tunnel, the , that is said to have connected the Sanada Maru to Osaka Castle during the siege.
The statue and tunnel are linked to the belief that the area was once home to the Sanada Maru, a fortification defended by the Toyotomi clan during the Siege of Osaka in 1614. The shrine's grounds contain this connection through the presence of the statue and the tunnel.