Somewhat in the manner of a therapist directing his patient towards a profound inner truth, Leo Johnson asked us to close our eyes and recall a time and a place when we we'd been "totally in the groove, really happy".

BBC: The joylessness of shopping

Close to the western end of Margaret Bridge, find the steep, cobbled Gul Baba Street which winds upward from Leo Frankel Street, then take a sharp left at the top, and look for the new moon symbol on a small, domed roof.

BBC: A Danube-led tour of Budapest