The principal town is Henley-on-Thames. Other settlements include Didcot, Thame, Wallingford and Watlington. The River Thames meanders through the district for 47 miles. The south-eastern part of the district lies within the Chilterns Area of Outstanding Natural Beauty.
The sites listed below are included in the Historic England's Register of Historic Parks and Gardens and are linked directly to the site (if available) and also to the Register and Parks & Gardens UK.