1191 Duke Berthold V of
1260 War breaks out in the Valais (today in Switzerland) as the Bishopry of Sion defends against an invasion by the County of Savoy.
1261 The Convent of Wurmsbach is established in Switzerland.
1291 According to tradition, the Swiss Confederation is formed by Uri, Schwyz, and Unterwalden, the "three forest cantons. A purported enacting document, the Federal Charter of 1291, is now widely believed to be a forgery.
1291 The Habsburgs acquire the Swiss city of Lucerne.
1349 The Jewish population of Basel, Switzerland is rounded up and incinerated, believed by the residents to be the cause of the ongoing bubonic plague.
1351 May 1 anton of Z
1352 The town of Biel/Bienne, Switzerland finalizes its alliance with the city of Bern.
1352 Glarus joins the Swiss Confederation.
1352 Zug joins the Swiss Confederation.
1353 Bern signs an alliance with the Swiss Confederation.
1356 The city of Basle in Switzerland is destroyed by an earthquake.
1386 Battle of Sempach: Swiss safeguard independence from Habsburg rule.
1427 First witch hunts begin, in Switzerland.
1469 Sigismund of Austria sells upper-Elsass (Alsace) to the Charles the Bold in exchange of aid in a war against the Swiss
1710 Swiss and Palatine German Protestants under the leadership of Christoph von Graffenried travel to Bath County in the Province of Carolina. The settlers displace the native town of Chattoka and found New Bern, named for von Graffenried's hometown of Berne, Switzerland.
1712 Treaty of Aargau signed between Catholic and Protestants. Introduced Protestant faith in Switzerland.
1782 In Switzerland, Anna Goldi in sentenced to death for witchcraft - the last legal witchcraft senten
July 1 - American privateers attack Lunenburg, Nova Scotia.
1802 French army enters Switzerland.
1809 The Swiss canton of Aargau denies Jews citizenship.
1815 The first commercial cheese factory is founded in Switzerland
1857 Discovery of La Tene culture artifacts in Switzerland by Hansli Kopp.
1897 First Zionist Congress convenes in Basel, Switzerland.
1920 Referendum in Switzerland is favorable to joining League of Nations.
1920 League of Nations moves its headquarters to Geneve, Switzerland
1923 The Treaty of Lausanne, settling the boundaries of modern Turkey, is signed in Switzerland by Greece, Bulgaria and other countries that fought in the First World War
1928 II Olympic Winter Games open in St. Moritz, Switzerland
1932 Riots between conservative and socialist supporters in Switzerland - 12 dead, 60 injured
1946 Soviet Union and Switzerland reform diplomatic relations.
1948 1948 Winter Olympics open in St. Moritz, Switzerland.
1951 Avalanches in the Alps - 240 die and 45,000 are buried for a time in Switzerland, Austria and Italy
1954 UEFA (the Union of European Football Associations) is formed in Basel, Switzerland
1956 The first Eurovision Song Contest is broadcast from Lugano, Switzerland. The winning song is ''Refrain'' by Lys Assia (music by G
1959 A referendum in Switzerland turns down female suffrage.
1960 March 6
1960 The particle accelerator of CERN is inaugurated in Geneva, Switzerland.
1971 May 5
1971 Switzerland gives women voting rights in state elections - but not in all canton-specific ones.
1973 The COSC The Swiss Official Chronometer testing Institute was founded in Switzerland by five Watch Cantons & FH, Federation of the Swiss Watch Industry.
1978 Charlie Chaplin's remains are stolen from Cosier-sur-Vevey, Switzerland.
1980 Six American diplomats, posing as Canadians, manage to escape from Tehran, Iran as they board a flight to Zurich, Switzerland and thereby end the Canadian caper operation.
1980 The St. Gothard Tunnel opens in Switzerland as the world's longest highway tunnel at 10.14 miles (16.32 km) stretching from Goschenen to Airolo.
1997 The so-called "Big Three" banks in Switzerland announce the creation of a $71 million fund to aid Holocaust survivors and their families.
1998 While en route from Adana to Ankara, a Turkish Airlines flight with a crew of 6 and 33 passengers is hijacked by a Kurdish militant, who orders the pilot to fly to Switzerland. The plane instead lands in Ankara after the pilot tricks the hijacker into thinking that he was landing in the Bulgarian capital of Sofia to refuel.
1999 Twenty-one persons die in a canyoning disaster near Interlaken, Switzerland.
2002 Switzerland, known for its neutrality, finally joins the United Nations.
2003 Pascal Couchepin becomes President of the Confederation in Switzerland.
2005 Twelve holidaymakers are killed in southern Switzerland when a bus carrying 27 seven people plunges 656 feet into a ravine.
2005 Switzerland votes to join the Schengen area and to allow same-sex partnerships.