This thesis attempts to trace the history of the area now known as Regent's Park from its origins as a part of the Manor of Tybum and its enclosure as a hunting park by Henry VIII, through its disparking during the Civil War and its subsequent use as farmland, to its development as London's first Garden City under the genius of John Nash and its later history as one of the best-managed and most profitable of the Crown Estates. The Park's royal associations and its proximity to London have profoundly affected its development.