Sherborne Castle was the place where advisor to the throne, Sir John Dee discussed his ideas of claiming parts of the world with his friend Sir Walter Raleigh. The estate was given to Walter Raleigh by Queen Elizabeth. As a result of the discussions with Dee, Walter Raleigh would get to Venezuela in 1595 to try to find the famous El Dorado. Raleigh was convinced it was at the end of the Orinoco River. He even put El Dorado on his map. Nevertheless, he had to come back due to the heavy rains.
Later on, he would try it a second time, again not succesful. As a result, he was beheaded in 1618.