Doric order The Roman architect Vitruvius, following contemporary practice, outlined in his treatise the procedure for laying out constructions based on a module, which he took to be one half a column's diameter, taken at the base. An illustration of Andrea Palladio's Doric order, as it was laid out, with modules identified, by Isaac Ware, in "The Four Books of Palladio's Architecture" (London, 1738) is illustrated at Vitruvian module. According to Vitruvius the height of Doric columns is six or seven times the diameter at the base. This gives the Doric columns a shorter, thicker look than Ionic columns, which have 8:1
The Istana of the month, there is a Changing of the Guards parade, which is a popular public event. The Istana is similar to many 18th-century neo-Palladian style buildings designed by British military engineers in India. It has a tropical layout like a Malay house, surrounded by statuesque columns, deep verandahs, louvred windows and panelled doors to promote cross-ventilation. The central three-storey 28-metre-high tower block dominates the building. The reasonably well-proportioned two-storey side wings feature Ionic, Doric and Corinthian orders with Ionic colonnades at the second storey and Doric colonnades at the first storey. The building sits in the its elevated position