Courthouses are versatile municipal structures. In addition
to reducing crime in your neighborhoods, they also store a portion of
your city's wealth. Courthouses need road access and labor before they
can bring benefits to the surrounding neighborhood. Once the courthouse
has everything it needs, it sends out magistrates to patrol the city's
streets. A portion of your city's money is stored in your courthouses.
Wise governors build police stations near courthouses. Gold can be delivered
to courthouses from your goldmines.
Tax collectors collect tax from houses - not individual
citizens. You must have a working palace before you can collect taxes.