No, it is not the beautiful worship buildings that we build. It is described in I Corinthians 3: 16-17: "Do you not know that you are God's temple and that God's Spirit dwells in you? If anyone destroys God's temple, God will destroy him. for God's temple is holy, and you are that temple."
First of all, we need to be fully aware that the word you in the original Greek language is plural. It is talking about those who are a part of the body of Christ.
Paul is wanting the Corinthians to understand that they are a unified assembly of believers. They were not to look at themselves as a collection of competing interests, personal preferences, or independent individuals. Those who make up the temple of God are to be interdependent, not independent. Paul is reminding us of the intent of Jesus' prayer in John 17: 21-13 that believers are unified in our Lord.
When we gather together at the church building we are not coming to the temple. We are bringing the temple where God dwells to the building where we join in unity in praise, honor, and the glory of His name through worship. This is where God dwells.
At the beginning of this chapter it talks about divisions in the church. In this passage, Paul warns that anyone who sets out to destroy the union of God's dwelling will be destroyed by God. Why? Because God's temple (body of Christ) is holy, and you all are the temple. Those are strong words. May we be committed to keeping God's temple holy and one in Him. mjm