In this episode, we focus on architecture & successful new approaches to urban design, from the Haussmann era's Square des Batignolles, up to the brand new street named for cellist Mstislav Rostropovitch. This route includes gorgeous Art Nouveau apartment buildings, the surprisingly lovely, brand-spanking-new, Tour Unic by Yansong Ma, and a secret relic from the Orient Express. For more info & images, check out my website. Thanks as always to Bremner Fletcher for technical expertise, and general know-how. The Improbable Walks theme music is performed by David Symons, New Orleans accordionist extraordinaire.