Question: What European era towards the end of the 18th century was the Pena Palace built in?

<P0-S0> Kalinga II (Odia: ଦ୍ବିତୀୟ କଳିଙ୍ଗ) was a powerful monarch and possibly an emperor from around the speculated era towards the end of 7th Century B.C.E. <P0-S1>  He was the son of Chullakalinga, the youngest son of Kalinga I who had married a virtuous princess from Sagala (Madra) . <P0-S2>  Kalinga II ascended the throne of the ancient state of Kalinga after the death of his paternal uncle Mahakalinga. <P0-S3>  Kalinga II finds mention in early Buddhist Jataka records of Chullakalinga Jataka (named after his father) and Kalingabodhi Jataka. <P0-S4>  He had spent most of his young life in the forests of Himavat where his father lived in exile. <P0-S5>  Trained with qualities of a king by his father and maternal grandfather, he was asked by Chullakalinga to go back to take the charge of his ancestral kingdom. <SEP> <P1-S0>  Romanticism was characterized by its emphasis on emotion and individualism as well as glorification of all the past and nature, preferring the medieval rather than the classical. <P1-S1>  It was partly a reaction to the Industrial Revolution, the aristocratic social and political norms of the Age of Enlightenment, and the scientific rationalization of nature—all components of modernity. <P1-S2>  It was embodied most strongly in the visual arts, music, and literature, but had a major impact on historiography, education, and the natural sciences. <P1-S3>  It had a significant and complex effect on politics, with romantic thinkers influencing liberalism, radicalism, conservatism and nationalism. <P1-S4> Romanticism (also the Romantic era or the Romantic period) was an artistic, literary, musical and intellectual movement that originated in Europe toward the end of the 18th century, and in most areas was at its peak in the approximate period from 1800 to 1850. <SEP> <P2-S0> The Aljafería Palace (Spanish: "Palacio de la Aljafería" ; Arabic: قصر الجعفرية‎ ‎ , tr. <P2-S1>  "Qasr al-Jaʿfariya") is a fortified medieval Islamic palace built during the second half of the 11th century in the Taifa of Zaragoza of Al-Andalus, present day Zaragoza, Aragon, Spain. <P2-S2>  It was the residence of the Banu Hud dynasty during the era of Abu Jaffar Al-Muqtadir after abolishing Banu Tujibi of Kindah dynasty. <P2-S3>  The palace reflects the splendor attained by the kingdom of the taifa of Zaragoza at the height of its grandeur. <P2-S4>  The palace currently contains the Cortes (regional parliament) of the autonomous community of Aragon. <SEP> <P3-S0>  The castle stands on the top of a hill in the Sintra Mountains above the town of Sintra, and on a clear day it can be easily seen from Lisbon and much of its metropolitan area. <P3-S1>  It is a national monument and constitutes one of the major expressions of 19th-century Romanticism in the world. <P3-S2> The Pena Palace (Portuguese: "Palácio da Pena" ) is a Romanticist castle in São Pedro de Penaferrim, in the municipality of Sintra, Portugal. <P3-S3>  The palace is a UNESCO World Heritage Site and one of the Seven Wonders of Portugal. <P3-S4>  It is also used for state occasions by the President of the Portuguese Republic and other government officials.