The growing prosperity of the authorities made Roman architecture impressive and luxurious, but it lacked humanity. The Roman Empire was a despotic state, and its power was based on the severe exploitation of the conquered nations. Roman architecture was one of the main instruments for glorifying and strengthening state power. The planning and shapes were to suppress an individual, to direct his movement. Thus, the importance of the Roman buildings is defined by a range of factors, such as political, cultural, ideological, and social. Augustus During the reign of Augustus, the building activity intensified extremely, showing quick evolution of the shapes and the materials used. Among several architecture achievements, it is necessary to single out the construction of the Forum Augustum and the evolution of the citizens’ dwellings. The poor began to live in multistory houses instead of the simple round huts; the palaces of the rich citizens became much more pompous and luxurious (Stamper 137). This evolution had a strong impact on the social life of the Empire, as the increase of the living standard furthers strengthening of the society’s spirit. Having felt the smell of luxury, the Roman strengthened their lust for power, wealth, and conquests. However, the Forum Augustum contributed more to the social evolution within the Roman Empire, as it functioned as an embodiment of the social mechanisms’ institutional organization (the center of the political life, the place for legal proceedings and education) (Forum of Augustus). The Temple of Mars Ultor reflected the martial character of the Roman spirit and of God. At the same time, the Forum impacted strongly on the power of religion within the Empire. The numerous architecture and art elements amazed and restrained the citizens. Tiberius In the period of Tiberius’ reign, the building activity went down. However, Tiberius’ Bridge can be considered an outstanding construction. Not only did the bridge survive until the present, but it still remains exploited (Laurence 45). The Tiberius’ Bridge shows the facilities of Roman architecture. Caligula Among the most important buildings of Caligula’s period are the military constructions, which were created during Caligula’s military campaigns, and the personal Caligula’s buildings. The most amazing construction was the Caligula’s Giant Ship, which was a floating palace full of pompous artworks and complicated enginery. The dimension of this ship seems impossible in ancient times (Selkirk 166). Some mechanisms, such as revolving platforms, “passed ahead” of the technical progress for several centuries, which makes Caligula’s Giant Ship an outstanding architecture specimen. Claudius The most advanced construction of the Claudius period was the Aqua Claudia. Water supply is of huge importance for every community, as history shows that the evolution of the civilization has been influenced much by the availability and location of water resources. Although the first Roman aqueducts were constructed in the IVth Century B.C., the Aqua Claudia became a symbol of the Roman Empire’s glory and its engineering achievements. Owing to its complicated construction, the Aqua Claudia was 30