Geneva.

Geneva is the second-most populous city in Switzerland (after Zürich) and is the most populous city of Romandy (the French-speaking part of Switzerland). Situated where the Rhône River exits Lake Geneva (French Lac Léman), it is the capital of the Republic and Canton of Geneva.
Geneva is widely regarded as a global city, mainly because of the presence of numerous international organizations, including the headquarters of many of the agencies of the United Nations and the Red Cross. It is also the place where the Geneva Conventions were signed, which chiefly concern the treatment of wartime non-combatants and prisoners of war.
A 2007 survey by Mercer Consulting found Geneva to have the second-highest quality of living in the world (narrowly outranked by Zürich).

Geneva observes Jeune genevois on the first Thursday following the first Sunday in September. By local tradition, this commemorates the date the news of the St. Bartholomew's Day massacre of Huguenots reached Geneva. The Genevois joke that the federal equivalent holiday, Jeune fédéral, is observed two weeks later on account of the rest of the country being a bit slow on the uptake.
Since 1818, a particular chestnut tree has been used as the official "herald of the spring" in Geneva. The sautier (secretary of the Parliament of the Canton of Geneva) observes the tree and notes the day of arrival of the first bud. While this event has no practical impact, the sautier issues a formal press release and the local newspaper will usually mention the news.
As this is one of the world's oldest records of a plant's reaction to climatic conditions, researchers have been interested to note that the first bud appears earlier and earlier in the year. During the first century, many dates were in March or April. In recent years, it has usually been in mid-February and sometimes even earlier. In 2002, the first bud appeared unusually early, on 7th February, and then again on 29th of December of the same year. The following year, one of the hottest Europe has ever had, became a year with no bud. In 2008, the first bud also appeared very early, on 19 February.