The Leaning Tower of Pisa! The construction of this imposing mass was started in the year 1174 by Bonanno Pisano. When the tower had reached its third storey the works ceased because it had started sinking into the ground. The tower remained thus for 90 years. It was completed by Giovanni di Simone, Tommano Simone (son of Andreo Pisano), crowned the tower with the belfry at half of 14th century. The top of the Leaning Tower can be reached by mounting the 294 steps which rise in the form of a spiral on the inner side of the tower walls.This very famous work is of Romanesque style, and as already stated dates back to the year 1174. Cylindrical in shape it is supplied with six open galleries. A cornice separates these galleries one from the other and each presents a series of small arches fitted on the capitals of the slender columns. In the base there is a series of big blind arcades with geometrical decorations. In the belfry there is the same design of arcades as that of the base, with the difference that here, there are, apart from the reduced proportions, the housings of the bells. This monument is mostly famous for its strong inclination. Regarding this inclination it can be safely stated that it is undoubtedly due to a sinking of the ground right from the time of its construction. Therefore, the assumption of those who desire to imagine that great tower was built inclined is entirely without foundation. Unfortunately, even today the great mass continues to sink very slowly. It is a question of about 1 mm. every year. Since nobody can state with mathematical security that this sinking will continue in the future at the present yearly rate, without its ceasing, remedies by means of adequate measures, based on scientific studies and projects, are under consideration. In the meantime supervision with instruments of very high precision is continuously being carried out.