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 Visitors (Tourist_ID VARCHAR)
TABLE: CREATE TABLE Visits (Tourist_ID VARCHAR)

### Question ###
How many tourists did not make any visit?

### Accurate SQL ###

SELECT COUNT(*) FROM Visitors WHERE NOT Tourist_ID IN (SELECT Tourist_ID FROM Visits)