the part of a building or organization where few people are allowed to go, especially where the most important or secret work is done

The inner sanctuary or Holy of Holies could be entered only by the High Priest. 只有大祭司才能进入内圣所或至圣所。

The pass provides "access all areas" to that holy of holies, the Olympic village. 通行证有权"进入所有区域"，可以进入那个最神圣的地方——奥运村。

the holiest part of a religious building, especially the Jewish temple

any place that is very special

This stadium is the holy of holies to many fans. 这个足球场对很多球迷来说就是圣地。