Diplomatic Documents of Switzerland

Diplomatic Documents of Switzerland (Dodis) is a research institute in Bern that opens up the sources on Swiss foreign policy since 1848. It runs an open online database with tens of thousands of digitised files, publishes a multi-volume printed edition, and belongs to the Swiss Academy of Humanities and Social Sciences. For travellers the database is more interesting than the institute itself: you can dig into a Federal Councillor's correspondence or read legation reports from the Second World War.