The deepest lake in Switzerland is Lago Maggiore with a maximum depth of 1,220 ft. It is located on the border with Italy and has a number of islands, the most famous of which are the Borromee Islands. ¹⁾

The oldest cantons of Switzerland are Schwyz, Uri, and Unterwalden, which entered into a perpetual union, the Swiss Confederation Act, in 1291. ²⁾

Bernoulli is the name of a famous family of Swiss mathematicians, from which they came: Jacob Bernoulli (1654 - 1705) - created, among other things, the foundations of probability calculus. Nicolaus Bernoulli (1687 - 1759) - was the first to describe the problem of the so-called Petersburg paradox. Johann Bernoulli (1667-1748) - Discovered Leonhard Euler's mathematical talent and dissuaded his father from the decision to train Leonhard as a pastor. Daniel Bernoulli (1700 - 1782) - Swiss mathematician and physicist. Jacob II Bernoulli (1759 - 1789 in St. Petersburg) - Swiss mathematician who came from the Bernoulli family. ³⁾

Romansh, also known as Rhaeto-Romance, is one of the official languages of Switzerland, along with Italian, German and French. The largest number of speakers live in Grisons, where it was predominant in the early 19th century (German predominates there today). ⁴⁾

The Swiss National Park is the largest nature reserve in Switzerland and the country's only national park. It is the oldest such protected area existing in the Alps. The beginnings of the national park are associated with the association “Pro Natura” founded in 1909. Its activists led to the creation of the national park in 1914. In 1979 the park acquired the status of a UNESCO Biosphere Reserve. ⁵⁾

Switzerland formally does not have a capital city. However, its de facto function is performed by Bern. The largest city is Zurich. ⁶⁾

The highest mountain in Switzerland is the Dufourspitze (Monte Rosa), but the most popular is the Matterhorn. ⁷⁾

Switzerland has 1,484 lakes, the largest of which is Lake Geneva (Lac Leman), although its southern shore is in France. ⁸⁾

Switzerland is probably the largest producer of chocolate in the world. ⁹⁾

Soccer and field hockey are the most popular sports in Switzerland. ¹⁰⁾

One of Switzerland's most famous landmarks is Geneva's Jet d'Eau, a fountain of water. ¹¹⁾

It has 4 official languages: German, French, Italian, and Romansh. This does not mean that every Swiss speaks more than one language, but most do. ¹²⁾

Switzerland has one of the lowest crime rates in industrialized countries despite Switzerland's liberal gun laws. ¹³⁾

One of Switzerland's mainstays is dairy farming and some of the best cheese will be found in this country. ¹⁴⁾

Jungfraujoch is the highest railroad station in Europe. ¹⁵⁾

The Cresta Run toboggan run in St. Moritz was built in 1885 and is renovated every year with fresh ice. ¹⁶⁾

Mont Dolent is a mountain located on the border of Italy and Switzerland, near the border with France. It is the only Alpine peak shared by the three countries. ¹⁷⁾