神田神社氏子御輿庫 at Akihabara, Tokyo

The parishioners' mikoshi storehouse at Kanda Shrine, home to portable shrines for the Kanda Festival.

The Kanda Jinja Ujiko Mikoshigura is the storehouse for the parishioners' portable shrines, or mikoshi, at Kanda Shrine, at 2-15-2 Sotokanda near the shrine's Sannomiya sub-shrine. It holds the mikoshi that are paraded through the streets during the Kanda Festival, one of Tokyo's three great festivals, which features around 200 large and small mikoshi and runs in mid-May.

The storehouse supports the parishioner town councils that maintain the mikoshi tradition, with each council carrying its own mikoshi through the neighbourhood during the festival. It sits within the shrine precinct, a short walk from Akihabara and Suehirocho stations, close to the heart of Electric Town.

Note the mikoshi storehouse as the home of Akihabara's festival portable shrines.
Official: https://kandamatsuri.com