Seville
Unlike many of the locations mentioned already, there were numerous places in which the Spanish and Moors lived peacefully side by side and these locations still have architectural remains from this time period. The cities of Caceres, Salamanca, Seville, and Toledo all have Spanish and Moorish construction from the Medieval Ages. Each also has numerous buildings built after the Moors left the region, which were strongly influenced by earlier Moorish architecture.
As the Moors were entirely expelled from the peninsula in the late 1400s, the Renaissance style arrived from Italy. At first the Renaissance introductions in Spain were little more than ornamentation and the city of Salamanca was the proud recipient of most of these facades. However, soon after entire buildings were being built in the Renaissance style, including the Palace of Charles V (1526) in Granada, while others had Renaissance influence, but were not entirely in the style, such as El Escorial (1563-1584) just outside of Madrid. The cities of Ubeda and Baeza also exhibit a number of examples in this style.
Gaudi architecture
In the late 1600s Baroque made a brief entrance into Spain, but generally in no way other than as facades. The Cathedral of Our Lady of the Pillar (current structure from 1681-1872) is one of the few buildings of note entirely in the Baroque style. The Baroque period was short-lived though as the neo-Classical movement hit full stride in Spain in the 1700s. The Royal Palace (1736) in Madrid has aspects of both the Baroque and neo-Classical styles, before the latter style, along with Gothic Revival took over, but again, with little splash.
Spanish architecture was again put under the spotlight in the late 1800s as Barcelona, under the leadership of Antoni Gaudi, became the leader in a unique style that has not been replicated elsewhere, although it may be considered a form of Art Nouveau. Among the structures by Gaudi, the Sagrada Familia (begun in 1882) and Casa Batllo (remodeled 1904-1906) are perhaps the most notable. The Palau de la Musica Catalana (1905-1908) is another fine example of Art Nouveau architecture in Barcelona.