 On 24 July 1923, the Treaty of Lausanne was signed at the Beau-Rivage Palace.In March–April 2015, the negotiations on Iran nuclear deal framework for a comprehensive agreement on the Iranian nuclear programme took place in the Beau-Rivage Palace, where the foreign ministers and delegations from the United States, the United Kingdom, Russia, China, France, the European Union, Germany (P5+1) and Iran were also hosted.The final press conference, on 2 April 2015, was held at the EPFL Learning Centre.