ring the changes
Champagne goes to Stuart Child of 3s Architects in Kingston, Surrey, who identified the three changes we've made to Vitra Fire Station (above). This week, can you spot the three changes we've made to Mendelsohn's Einstein Tower at Potsdam near Berlin (left). Post your answers, to arrive by Tuesday morning, to AJ Ring the Changes, 151 Rosebery Avenue, London EC1R 4GB, or fax 020 7505 6701. The first correct entry pulled out of the hat wins a bottle of bubbly.