The leaders of the Italian merchant republic who educated their youth as humanists, provided to expose ancient Greek and Latin sources of history, science, philosophy, art and poetry so Humanism was began. It spread to all arts and also architecture which associated all’antica details from Greco-Roman culture. Even though, the artists and architects were copying antiquity, there was the effort for eager to discover the principles of design. That’s why, the new palaces and churches was changed the character of Italian cities. Because of the humanism idea, buildings gained more uniform scale and geometric basis.
Most public works that were rounded arches, symmetrically placed bays and harmonious proportions were based on numbers, such as 1:1, 1:2, and 2:3. In this way, it caused new way of seeing. That perspective vision accompanied the principal public space of the city. Palazzo Vecchio that piazza della Signoria surrounded was one of the example of that situation. The enlarged space brought together on a grid and brick pavers and also allowed one to view the volume of the city’s public palace and bell tower.

In that period, one of the greatest civic projects was Santa Maria del Fiore that was designed by Arnolfo di Cambio. After the halt, Francesco Talenti extended the length of the nave an extra bay and outlined the area for huge octagonal dome over the crossing. Also their intention was surpass the dome to domes of the rival cities of Pisa and Siena. That’s why Neri Di Fioravanti produced a scale model of the dome’s central octagon which stepped down to three partial octagons. Each octagon was contained five radiating chapels. The structural concept was based on the twelfth-century Baptistery of San Giovanni.
In 1418, Filippo Brunelleschi took the charge of the project. In first time the architect had to collective work with his rival Lorenzo Ghiberti on dome problems. However, the architect was prevailed with his solution and demonstrated his talent in art of construction. The secret of Brunelleschi’s double-shelled structure lay in masonry techniques and ribbed skeleton gird by nine horizontal supports concealed between the two layers. Also he conserved the pointed arches and ribs in the dome. At the base of the octagonal drum he inserted rounded tribunes between three apses to resist the outward thrust of the dome. The dome was completed after the architect’s death with buttresses made with classical glutted pilasters and reversed-curve volutes.


In 1419, Brunelleschi was designed the Foundling Hospital. His design was suitable the conventions of earlier hospitals in Florence. He used long halls and courtyards which were located behind of the public loggia. He also set the level of the loggia above head height on a nine step base. Stage like relation provided a greater sense of drama to the anonymous act of leaving the orphans at a window on far left of the loggia. After that century, loggia was used for completing the symmetry of the piazza in directly opposite the hospital.

In 1417 Brunelleschi also began the dome of the Old Sacristy of San Lorenzo. In the building main program included the tomb for the patron and his wife beneath the table in the centre of the room. Cubic volume on pendentives was carry the dome rose and it was assuming the shape of a hemispherical umbrella divided by twelve round-arch ribs. Also smaller dome covered the altar.
Muslim Roman Empire
Between fifteenth and eighteenth century, the leading power of the Mediterranean was Ottoman Turks. In that period Ottoman architects was inspired from architectural models which were Armenian churches, Seljuk tombs and Persian arcades. The Orhan Gazi Cami was built-in Bursa with reverse-T shape plan and the location that was looking the central markets. The entry façade had a five-bay porch made with pointed arches and the masonry which was seems like Byzantine craft, made from bands of brick and limestone. There is an octagonal fountain house in the garden with central bay of porch for ablution stood. Inside, two central domes covered an axial prayer hall leading to the mihrab, the other minor domes on the sides was covering the auxiliary rooms.
The reverse-T shape plan was applied in many royal foundation in Bursa including, Yeşil Cami that built-in the early fifteenth century in east of the fortress of Mehmed I. Rendered ashlar blocks of marble was cladded on the façade that all of the proportional elements repeated serially. Interiority of Yeşil Cami, leading to second level were through with foyer and stairs. Comfortable rooms were located separately from the prayer hall so the sultan looked down from the loggia to the domed spaces of the prayer hall. Upper clerestory windows glazed with green and blue panes that filtered the light, while delicate muqarnas articulated the niches.

One of the great mosques was Ulu Cami in Bursa. It differed in type from the reverse-T shape. Hypostyle model that found throughout Southwest Asia was used. Each of its twenty bays carried round dome. These squares like round domes that were used in palaces, hospitals, schools, baths and mosques were the main unit of Ottoman architecture.











Romans architectural innovations were benefited from the colonies which lived dependently. So, Perugia and Volterra gateways and also Capitoline Hill were public spaces that they were designed and inspired from Etruscans architectural methods. Especially, they obsessed on Jupiter Optimus Maximus Temple which was imitating the Etruscan Temples. Lateral tripartite cella under a lower pitched porch, accessed by axial stairs, the column of the Tuscan order, the Etruscan version of Doric, stood undecorated, stout and wide apart features were referenced from Etruscans. Roman temple usually repeated Etruscan frontal orientation with a columnated porch.

As Athenian government developed, they needed new building types. These types include Prytaneion (city hall), Skias (dining hall for the members of the senate), Strategion(chamber for military) and Bouleuterion (senate house). 


