The Neoclassic style in Greek architecture first makes an appearance in the years of King Otto (1833-1862). It is first applied to the public buildings of Athens and of other urban Centres. Immediately after, private houses are built by the same architects in the same style. The Athenian State Library, the Academy, the Municipal theatre, the Polytechnic School are buildings directly related to such well- known architects of the time as Hansen, Ziller, Kaftatzoglou. The neoclassic style of the reign of Otto displays geometrically arranged masses and plain facades. Cleanthes, an architect, built villas and town houses for prosperous Athenians and established the type of the two -storied house with a tripartite facade. Among his better known are the houses built for the Duchess of Piacenza. During the reign of George I (1863-1913) the neoclassic style becomes popular and obtains a decorative character adopting baroque and rococo elements. The architect Ziller has greatly contributed to the popularity of the style by creating a type of house, which is frequently copied by colleagues of his in many provincial towns. Ziller’s pursuit has been to make a house in harmony with its surroundings and to cover the walls of the façade in a calligraphic way. The colouring of the exterior in soft tones and the painted decoration of the interior complete the character of the neoclassic house.