Département de Physique Théorique
Université de Genève
24, quai Ernest Ansermet
1211 Genève 4
From the airport
Take a free ticket for the public transport system before you leave the luggage hall and go through customs. Then take a train to Geneva main station (all trains from the airport stop there next). Alternatively take bus number 10 to "Bel-Air" where you can either change to trame 14 to "Jonction" direction "P+R Bernex" or change to bus 19 to "Musée d'ethnographie" direction "Onex-Cité".
From the train station
Go to the front of the station and take bus number 1 to "Ecole-Medecine" direction "Rive". Alternatively, take tram 14 to "Jonction" direction "P+R Bernex" under the train tracks. This webpage of the theoretical physics department shows the location of the bus and tram stops when you come from the station.