Martin Oldham is an independent researcher based in London

Lake Geneva with symmetrical reflections, Ferdinand Hodler
West Gallery with view into Central Court and Alison Wilding's 'Arena', 2000. Leeds Art Gallery.
A Turkish Woman by a Stream, (c. 1907), John Singer Sargent. Victoria and Albert Museum
The Finding of Moses, (1904), Lawrence Alma-Tadema, private collection, wikimedia commons
Exterior of the National Portrait Gallery, London
Wedding Dance in the Open Air (1607–14), Pieter Brueghel the Younger. Holburne Museum, Bath. Photo: Dominic Brown
The Old Bowling Green, Halsway Court, Somerset (1865), John William North. © The Trustees of the British Museum
Front room, David Parr House