It wasn't possible to save it, but the old Paris that was vanishing away 100 years ago was documented in thousands upon thousands of beautiful photographs by Eugène Atget, a failed painter and actor who never thought of his photography as "art". The National Gallery of Art has a series of pages on Atget and his photographs with essays and illustrations. Clicking on one of the photographs will enlarge it, and you can click on the right or left side to go to an enlargement of the next or previous photo. The image here was made at the Parc de Sceaux in 1925.