Exiting the Kenrokuen Gate, there's a staircase and an escalator that lead down to the underground level, where you'll find Kanazawa Station on the Hokuriku Railroad. The model of the Tsuzumi Gate is displayed near the ticket gates.
The operating hours are the same as the station's, but it's possible this underground area is open all day.

Exiting the Kenrokuen Gate, there's a staircase and an escalator that lead down to the underground level, where you'll find Kanazawa Station on the Hokuriku Railroad. The model of the Tsuzumi Gate is displayed near the ticket gates.
The operating hours are the same as the station's, but it's possible this underground area is open all day.