It is also the only Great Lake located entirely in the United States. Lake Ontario: Ontario is the Huron word for lake of shining water. This lake is the smallest of all the Great Lakes when measured in surface area (7,340 square miles / 18,960 square km).
The Swiss franc (CHF) is the only official currency in Switzerland (and in Liechtenstein). The franc is the only currency accepted everywhere. The Euro is the currency in the neighboring countries Germany, France, Italy and Austria, and in many other European countries. Nevertheless, you can pay with Euros in many shops, hotels, rail stations and gas stations in Switzerland. This is convenient if you're only in transit or only stay for one night.
There are also a number of other countries in the European Union that have still not adopted the Euro as their main currency: Bulgaria, Czech Republic, Hungary, Latvia, Lithuania, Poland and Romania.hich countries use the euro? There are currently 23 countries using the euro: Andorra, Austria, Belgium, Cyprus, Estonia, Finland, France, Germany, Greece, Ireland, Italy, Kosovo, Luxembourg, Malta, Monaco, Montenegro, the Netherlands, Portugal, San Marino, Slovakia, Slovenia, Spain and Vatican City.