Between 1997 and 2005, the Institute for Theatre Studies at the University of Bern compiled the "Theaterlexikon der Schweiz" (TLS). With this reference work, Swiss theatre development is documented in all its diversity for the first time. The TLS offers a broad thematic, topographical and personal overview of the Swiss theatre landscape from its beginnings to the present, which will serve as an indispensable basis for any further theatre studies research in Switzerland.