The Matterhorn is 4,478 metres tall. That is roughly the same as 12 Eiffel Towers stacked on top of each other. From the Swiss side, it looks like a giant stone tooth pointing at the sky, with four steep faces that almost meet at a single point.
It got its pointed shape from glaciers - rivers of ice that slowly carved away at the rock over millions of years. Each side of the mountain was ground down by a different glacier, which is why it ended up four-sided.
The closest town to the Matterhorn is called Zermatt. Cars are not allowed there - everyone gets around by little electric taxis, horse-drawn carriages or simply by walking. From Zermatt, mountain trains and cable cars carry visitors up to look at the peak.
The Toblerone chocolate bar was invented in Bern, Switzerland's capital, in 1908. The packaging is shaped like a tiny Matterhorn. If you look closely at the picture on a Toblerone wrapper, there is a bear hidden in the mountain - because Bern means 'bear' and it is the symbol of the city.