Questions & Answers about Stedet er hellig.
Because stedet is the definite form of sted.
- et sted = a place
- stedet = the place
In this sentence, Norwegian is talking about the place, not just any place, so stedet is required.
The ending -et is the usual definite singular ending for many neuter nouns in Norwegian.
Since sted is a neuter noun:
- et sted = a place
- stedet = the place
This is similar to how English uses the, but in Norwegian the definiteness is often added to the end of the noun.