sanctum
/ˈsæŋktəm/
noun
- A private or sacred place that is not easily entered by others; a retreat.
- She retreated to her sanctum at the top of the house to write.
- Only the high priest was allowed into the inner sanctum of the temple.
- The professor's office was his sanctum, filled with books and papers.
- A place that is considered especially holy, such as the most sacred part of a religious building.
- They entered the sanctum with a sense of awe and reverence.
- The ancient sanctum housed the relics of the saint.
- The inner sanctum of the shrine was off-limits to tourists.