Portuguese culture is based on a past that dates from prehistoric times into the eras of Roman and Moorish invasion. All have left their traces in a rich legacy of archaeological remains, including prehistoric cave paintings at Escoral, the Roman township of Conimbriga, the Temple of Diana in Évora and the typical Moorish architecture of such southern towns as Olhão and Tavira. Throughout the centuries, Portugal's arts have been enriched by foreign influences, including Flemish, French and Italian. The voyages of the Portuguese discoverers opened the country to Oriental influences and the revelation of Brazil's wealth of gold and jewels fed the Baroque flame in decoration.