HOW PEOPLE CAN ENJOY VIEWS OF A LAND MARK, SUCH AS AN OLD CASTLE HAS NON SMALL IMPACTS ON ONE'S IMAGE OF THE AREA. THE AUTHORS HAVE PROPOSED A 3-D MODEL TO EVALUATE HOW EACH BUILDING PROJECT WILL DISTURB VISTAS TO A LANDMARK FROM THE NEIGHBOURING AREA OF THE PROJECT. THIS PAPER FIRSTLY DISCUSSES, TAKING THE CBD OF KUMAMOTO CITY AS THE CASE, A METHOD OF PLANNING STUDIES TO CONTROL BUILDING BULK IN THE EXISTING URBAN CONTEXT, THEN SECONDLY, PROPOSED A PROBABILITIC APPROACH OF DESCRIBING BUILDING BULK GUIDE LINE THAT APPLIED A CONCEPT OF MAXIMUM RATIO OF THE VOLUME FROM WHERE NO ONE CAN OBSERVE REFERRING LAND MARK FOR EACH ZONE OF A CITY.
