corridor; gallery; hallway; cloister (i.e. covered walk typically circling a building or garden, esp. in a palace or place of worship)
修道院の回廊を静かに歩いた。
I walked quietly through the cloister of the monastery.
回廊の壁にはフレスコ画が描かれている。
Frescoes are painted on the walls of the corridor.
回廊に差し込む光が幻想的だった。
The light streaming into the corridor was magical.