Jesmond Dene, a public park in the east end of Newcastle upon Tyne, England, occupies the narrow steep-sided valley of a small river known as the Ouseburn, flowing south to join the River Tyne. In north-east England, such valleys are commonly known as denes; the name 'Jesmond' meaning 'mouth of the Ouseburn'. Lord Armstrong and his wife, of the now-demolished Jesmond Dean house nearby, first laid out the park during the 1860s.