the external language of classical Greek architecture for the purposes of the ancient Romans, but differed from Greek buildings, becoming a new architectural style. The two styles are often considered one body of classical architecture. Roman architecture flourished in the Roman Republic and even more so under the Empire, when the great majority of surviving buildings were constructed. It used new materials, particularly concrete, and newer technologies such as the arch and the dome to make buildings that were typically strong and well-engineered. Large numbers remain in some form across the empire, sometimes complete and still in use. Medieval architecture Romanesque architecture combines features of ancient Roman and Byzantine buildings and other local traditions. It is known for its massive quality, thick walls, round arches, sturdy pillars, groin vaults, large towers, and decorative arcading. Each building has clearly defined forms, frequently of a very regular, symmetrical plan; the overall appearance is one of simplicity when compared with the Gothic buildings that were to follow. The style can be identified right across Europe, despite regional characteristics and different materials, and is most frequently seen in churches. Plenty of examples of this architecture are found alongside the Camino de Santiago. Gothic architecture flourished in Europe during the High and Late Middle Ages. It evolved from Romanesque architecture and was succeeded by Renaissance architecture. Originating in 12th century France and lasting into the 16th century, Gothic architecture was known during the period as Opus Francigenum ("French work"), with the term Gothic first appearing during the latter part of the Renaissance. Its characteristics include the pointed arch, the ribbed vault (which evolved from the joint vaulting of Romanesque architecture), and the flying buttress. Gothic architecture is most familiar as the architecture of many of the great cathedrals, abbeys, and churches of Europe. Renaissance and baroque architecture Renaissance architecture began in the early 14th and lasted until the early 17th century. It demonstrates a conscious revival and development of certain elements of ancient Greek and Roman architectural thought and material culture, particularly the symmetry, proportion, geometry, and the regularity of parts of ancient buildings. Developed first in Florence, with Filippo Brunelleschi as one of its innovators, the Renaissance style quickly spread to other Italian cities. The style was carried to France, Germany, England, Russia, and other parts of Europe at different dates and with varying degrees of impact Palladian architecture was derived from and inspired