Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE FACULTY ( Building VARCHAR, FacID VARCHAR )
TABLE: CREATE TABLE COURSE ( Instructor VARCHAR )

### Question ###
Which building does the instructor who teaches the most number of courses live in?

### Accurate SQL ###

SELECT T2.Building FROM COURSE AS T1 JOIN FACULTY AS T2 ON T1.Instructor = T2.FacID GROUP BY T1.Instructor ORDER BY COUNT(*) DESC LIMIT 1