The Portuguese visited Benin City around 1485. Benin grew rich during the 16th and 17th centuries due to trade within southern Nigeria, as well as through trade with Europeans, mostly in pepper and ivory. In the early 16th century, the Ọba sent an ambassador to Lisbon, and the King of Portugal sent Christian missionaries to Benin. Some residents of Benin could still speak a pidgin Portuguese in the late 19th century. Many Portuguese loan words can still be found today in the languages of the area. A Portuguese captain described the city in 1691:"Great Benin, where the king resides, is larger than Lisbon; all the streets run straight and as far as the eye can see. The houses are large, especially that of the king, which is richly decorated and has fine columns. The city is wealthy and industrious. It is so well governed that theft is unknown and the people live in such security that they have no doors to their houses". This was at a time when theft and murder were rife in London.